- published: 01 Feb 2013
- views: 156165
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Get the full course at: http://www.MathTutorDVD.com
In this lesson, you'll learn about the concept of variance in statistics. We'll discuss how variance is derived and what the equations of variance means.
Statistics - Calculating Variance. I give the formula and show one example of finding variance.
For more free videos, visit http://PatrickJMT.com
- published: 01 Nov 2008
- views: 306342
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Watch the next lesson: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/variance-of-a-population?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Missed the previous lesson?
https://www.khanacademy.org/math/probability/descriptive-statistics/box-and-whisker-plots/v/range-and-mid-range?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s Probability and Statistics channel:
https://www.youtube.com/channel/UCRXuOXLW3LcQLWvxbZiIZ0w?sub_confirmation=1
Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy
- published: 19 Apr 2010
- views: 370596
This video shows how to find the variance for a set of data. Take note that there are two formulas. One formula is used if the data represents a population. The other is if the data represents a sample. For more videos please visit http://www.mysecretmathtutor.com
- published: 12 Sep 2011
- views: 106049
Thinking about how we can estimate the variance of a population by looking at the data in a sample.
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Watch the next lesson: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/review-and-intuition-why-we-divide-by-n-1-for-the-unbiased-sample-variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Missed the previous lesson?
https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/variance-of-a-population?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s Probability and Statistics channel:
https://www.youtube.com/channel/UCRXuOXLW3LcQLWvxbZiIZ0w?sub_confirmation=1
Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy
- published: 21 Nov 2012
- views: 139617
Using the variance of a sample to estimate the variance of a population
Watch the next lesson: https://www.khanacademy.org/math/probability/random-variables-topic/random_variables_prob_dist/v/random-variables?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Missed the previous lesson?
https://www.khanacademy.org/math/probability/descriptive-statistics/old-stats-videos/v/statistics-variance-of-a-population?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s Probability and Statistics channel:
https://www.youtube.com/channel/UCRXuOXLW3LcQLWvxbZiIZ0w?sub_confirmation=1
Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy
- published: 23 Jan 2009
- views: 403678
Variance as a measure of, on average, how far the data points in a population are from the population mean
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Watch the next lesson: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/sample-variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Missed the previous lesson?
https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/range-variance-and-standard-deviation-as-measures-of-dispersion?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s Probability and Statistics channel:
https://www.youtube.com/channel/UCRXuOXLW3LcQLWvxbZiIZ0w?sub_confirmation=1
Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy
- published: 20 Nov 2012
- views: 170593
Tutorial on calculating the standard deviation and variance for statistics class. The tutorial provides a step by step guide.
Like us on: http://www.facebook.com/PartyMoreStudyLess
Related Videos:
How to Calculate Mean and Standard Deviation Using Excel
http://www.youtube.com/watch?v=efdRmGqCYBk
Why are degrees of freedom (n-1) used in Variance and Standard Deviation
http://www.youtube.com/watch?v=92s7IVS6A34
Playlist of z scores
http://www.youtube.com/course?list=EC6157D8E20C151497
David Longstreet Professor of the Universe
Like us on: http://www.facebook.com/PartyMoreStudyLess
Professor of the Universe: David Longstreet http://www.linkedin.com/in/davidlongstreet/
MyBookSucks.Com
- published: 20 Nov 2010
- views: 450939
Statistics 101: Variance and its Sampling Distribution
In this video we begin to make inferences about variances. To begin I offer several short, real-world scenarios where variance becomes important in its own right. Next we compare the sampling distribution of sample means to the sampling distribution of variances. This leads us to a new distribution; the chi-square distribution. We end by learning how to find critical values in the chi-square table. Enjoy!
For my complete video library organized by playlist, please go to my video page here:
http://www.youtube.com/user/BCFoltz/videos?flow=list&view;=1&live;_view=500&sort;=dd
- published: 06 Apr 2013
- views: 18762
The most intuitive explanation of why we use standard deviation and variance measures, and why they're not the same thing!
SUBSCRIBE at: https://www.youtube.com/subscription_center?add_user=quantconceptsedu
LIKE my Facebook page and ask me a question! I'll answer ASAP: https://www.facebook.com/freestatshelp
Ever wondered why we divide by N-1 for sample variance?
https://www.youtube.com/watch?v=9Z72nf6N938&feature;=youtu.be
Get access to my comprehensive stats course on HYPOTHESIS TESTING for only $3.00!
https://www.udemy.com/simplestats/?couponCode=YTT
**
Keywords: statistics, statistics help, statistics tutor, statistics tuition, hypothesis testing, regression analysis, university help, stats help, simple regression, multiple regression, econometrics, variance, standard deviation, variation
- published: 03 Aug 2015
- views: 2470
In probability theory and statistics, the variance is a measure of how far a set of numbers is spread out. It is one of several descriptors of a probability distribution, describing how far the numbers lie from the mean (expected value). In particular, the variance is one of the moments of a distribution. In that context, it forms part of a systematic approach to distinguishing between probability distributions. While other such approaches have been developed, those based on moments are advantageous in terms of mathematical and computational simplicity.
The variance is a parameter describing in part either the actual probability distribution of an observed population of numbers, or the theoretical probability distribution of a sample (a not-fully-observed population) of numbers. In the latter case a sample of data from such a distribution can be used to construct an estimate of its variance: in the simplest cases this estimate can be the sample variance, defined below.
The variance of a random variable or distribution is the expectation, or mean, of the squared deviation of that variable from its expected value or mean. Thus the variance is a measure of the amount of variation of the values of that variable, taking account of all possible values and their probabilities or weightings (not just the extremes which give the range).
This page contains text from Wikipedia, the Free Encyclopedia -
http://en.wikipedia.org/wiki/Variance
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
This article is licensed under the Creative Commons Attribution-ShareAlike 3.0 Unported License, which means that you can copy and modify it as long as the entire work (including additions) remains under this license.
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17:04What is Variance in Statistics?
What is Variance in Statistics?What is Variance in Statistics?
Get the full course at: http://www.MathTutorDVD.com In this lesson, you'll learn about the concept of variance in statistics. We'll discuss how variance is derived and what the equations of variance means. -
5:08Statistics - Calculating Variance
Statistics - Calculating VarianceStatistics - Calculating Variance
Statistics - Calculating Variance. I give the formula and show one example of finding variance. For more free videos, visit http://PatrickJMT.com -
12:34Range, variance and standard deviation as measures of dispersion | Khan Academy
Range, variance and standard deviation as measures of dispersion | Khan AcademyRange, variance and standard deviation as measures of dispersion | Khan Academy
Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Watch the next lesson: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/variance-of-a-population?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Missed the previous lesson? https://www.khanacademy.org/math/probability/descriptive-statistics/box-and-whisker-plots/v/range-and-mid-range?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to KhanAcademy’s Probability and Statistics channel: https://www.youtube.com/channel/UCRXuOXLW3LcQLWvxbZiIZ0w?sub_confirmation=1 Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy -
3:47Statistics - Find the variance
Statistics - Find the variance -
10:38Sample variance | Descriptive statistics | Probability and Statistics | Khan Academy
Sample variance | Descriptive statistics | Probability and Statistics | Khan AcademySample variance | Descriptive statistics | Probability and Statistics | Khan Academy
Thinking about how we can estimate the variance of a population by looking at the data in a sample. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Watch the next lesson: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/review-and-intuition-why-we-divide-by-n-1-for-the-unbiased-sample-variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Missed the previous lesson? https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/variance-of-a-population?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to KhanAcademy’s Probability and Statistics channel: https://www.youtube.com/channel/UCRXuOXLW3LcQLWvxbZiIZ0w?sub_confirmation=1 Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy -
11:18Statistics: Sample variance | Descriptive statistics | Probability and Statistics | Khan Academy
Statistics: Sample variance | Descriptive statistics | Probability and Statistics | Khan AcademyStatistics: Sample variance | Descriptive statistics | Probability and Statistics | Khan Academy
Using the variance of a sample to estimate the variance of a population Watch the next lesson: https://www.khanacademy.org/math/probability/random-variables-topic/random_variables_prob_dist/v/random-variables?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Missed the previous lesson? https://www.khanacademy.org/math/probability/descriptive-statistics/old-stats-videos/v/statistics-variance-of-a-population?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to KhanAcademy’s Probability and Statistics channel: https://www.youtube.com/channel/UCRXuOXLW3LcQLWvxbZiIZ0w?sub_confirmation=1 Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy -
8:05Variance of a population | Descriptive statistics | Probability and Statistics | Khan Academy
Variance of a population | Descriptive statistics | Probability and Statistics | Khan AcademyVariance of a population | Descriptive statistics | Probability and Statistics | Khan Academy
Variance as a measure of, on average, how far the data points in a population are from the population mean Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Watch the next lesson: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/sample-variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Missed the previous lesson? https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/range-variance-and-standard-deviation-as-measures-of-dispersion?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it! About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content. For free. For everyone. Forever. #YouCanLearnAnything Subscribe to KhanAcademy’s Probability and Statistics channel: https://www.youtube.com/channel/UCRXuOXLW3LcQLWvxbZiIZ0w?sub_confirmation=1 Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy -
5:05How to calculate Standard Deviation and Variance
How to calculate Standard Deviation and VarianceHow to calculate Standard Deviation and Variance
Tutorial on calculating the standard deviation and variance for statistics class. The tutorial provides a step by step guide. Like us on: http://www.facebook.com/PartyMoreStudyLess Related Videos: How to Calculate Mean and Standard Deviation Using Excel http://www.youtube.com/watch?v=efdRmGqCYBk Why are degrees of freedom (n-1) used in Variance and Standard Deviation http://www.youtube.com/watch?v=92s7IVS6A34 Playlist of z scores http://www.youtube.com/course?list=EC6157D8E20C151497 David Longstreet Professor of the Universe Like us on: http://www.facebook.com/PartyMoreStudyLess Professor of the Universe: David Longstreet http://www.linkedin.com/in/davidlongstreet/ MyBookSucks.Com -
27:20Statistics 101: Variance and its Sampling Distribution
Statistics 101: Variance and its Sampling DistributionStatistics 101: Variance and its Sampling Distribution
Statistics 101: Variance and its Sampling Distribution In this video we begin to make inferences about variances. To begin I offer several short, real-world scenarios where variance becomes important in its own right. Next we compare the sampling distribution of sample means to the sampling distribution of variances. This leads us to a new distribution; the chi-square distribution. We end by learning how to find critical values in the chi-square table. Enjoy! For my complete video library organized by playlist, please go to my video page here: http://www.youtube.com/user/BCFoltz/videos?flow=list&view;=1&live;_view=500&sort;=dd -
2:12Simple explanation: Standard Deviation vs Variance?
Simple explanation: Standard Deviation vs Variance?Simple explanation: Standard Deviation vs Variance?
The most intuitive explanation of why we use standard deviation and variance measures, and why they're not the same thing! SUBSCRIBE at: https://www.youtube.com/subscription_center?add_user=quantconceptsedu LIKE my Facebook page and ask me a question! I'll answer ASAP: https://www.facebook.com/freestatshelp Ever wondered why we divide by N-1 for sample variance? https://www.youtube.com/watch?v=9Z72nf6N938&feature;=youtu.be Get access to my comprehensive stats course on HYPOTHESIS TESTING for only $3.00! https://www.udemy.com/simplestats/?couponCode=YTT ** Keywords: statistics, statistics help, statistics tutor, statistics tuition, hypothesis testing, regression analysis, university help, stats help, simple regression, multiple regression, econometrics, variance, standard deviation, variation
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- Variance
- Vector space
- Wald test
- Weighted mean
- Weighted variance
- Z-test
Variance
ALBUMS
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Released 1993- add to main playlist Play in Full Screen Elements Remain
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What is Variance in Statistics?
Get the full course at: http://www.MathTutorDVD.com In this lesson, you'll learn about the concept of variance in statistics. We'll discuss how variance is derived and what the equations of variance means. -
Statistics - Calculating Variance
Statistics - Calculating Variance. I give the formula and show one example of finding variance. For more free videos, visit http://PatrickJMT.com -
Range, variance and standard deviation as measures of dispersion | Khan Academy
Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Watch the next lesson: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/variance-of-a-population?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Missed the previous lesson? https://www.khanacademy.org/math/probability/descriptive-statistics/box-and-whisker-plots/v/range-and-mid-range?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weathe... -
-
Sample variance | Descriptive statistics | Probability and Statistics | Khan Academy
Thinking about how we can estimate the variance of a population by looking at the data in a sample. Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Watch the next lesson: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/review-and-intuition-why-we-divide-by-n-1-for-the-unbiased-sample-variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Missed the previous lesson? https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/variance-of-a-population?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandSta... -
Statistics: Sample variance | Descriptive statistics | Probability and Statistics | Khan Academy
Using the variance of a sample to estimate the variance of a population Watch the next lesson: https://www.khanacademy.org/math/probability/random-variables-topic/random_variables_prob_dist/v/random-variables?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Missed the previous lesson? https://www.khanacademy.org/math/probability/descriptive-statistics/old-stats-videos/v/statistics-variance-of-a-population?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predicti... -
Variance of a population | Descriptive statistics | Probability and Statistics | Khan Academy
Variance as a measure of, on average, how far the data points in a population are from the population mean Practice this lesson yourself on KhanAcademy.org right now: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Watch the next lesson: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/sample-variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Missed the previous lesson? https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/range-variance-and-standard-deviation-as-measures-of-dispersion?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics Prob... -
How to calculate Standard Deviation and Variance
Tutorial on calculating the standard deviation and variance for statistics class. The tutorial provides a step by step guide. Like us on: http://www.facebook.com/PartyMoreStudyLess Related Videos: How to Calculate Mean and Standard Deviation Using Excel http://www.youtube.com/watch?v=efdRmGqCYBk Why are degrees of freedom (n-1) used in Variance and Standard Deviation http://www.youtube.com/watch?v=92s7IVS6A34 Playlist of z scores http://www.youtube.com/course?list=EC6157D8E20C151497 David Longstreet Professor of the Universe Like us on: http://www.facebook.com/PartyMoreStudyLess Professor of the Universe: David Longstreet http://www.linkedin.com/in/davidlongstreet/ MyBookSucks.Com -
Statistics 101: Variance and its Sampling Distribution
Statistics 101: Variance and its Sampling Distribution In this video we begin to make inferences about variances. To begin I offer several short, real-world scenarios where variance becomes important in its own right. Next we compare the sampling distribution of sample means to the sampling distribution of variances. This leads us to a new distribution; the chi-square distribution. We end by learning how to find critical values in the chi-square table. Enjoy! For my complete video library organized by playlist, please go to my video page here: http://www.youtube.com/user/BCFoltz/videos?flow=list&view;=1&live;_view=500&sort;=dd -
Simple explanation: Standard Deviation vs Variance?
The most intuitive explanation of why we use standard deviation and variance measures, and why they're not the same thing! SUBSCRIBE at: https://www.youtube.com/subscription_center?add_user=quantconceptsedu LIKE my Facebook page and ask me a question! I'll answer ASAP: https://www.facebook.com/freestatshelp Ever wondered why we divide by N-1 for sample variance? https://www.youtube.com/watch?v=9Z72nf6N938&feature;=youtu.be Get access to my comprehensive stats course on HYPOTHESIS TESTING for only $3.00! https://www.udemy.com/simplestats/?couponCode=YTT ** Keywords: statistics, statistics help, statistics tutor, statistics tuition, hypothesis testing, regression analysis, university help, stats help, simple regression, multiple regression, econometrics, variance, standard deviation, va...
What is Variance in Statistics?
- Order: Reorder
- Duration: 17:04
- Updated: 01 Feb 2013
- views: 156165
Get the full course at: http://www.MathTutorDVD.com
In this lesson, you'll learn about the concept of variance in statistics. We'll discuss how variance is der...
Get the full course at: http://www.MathTutorDVD.com
In this lesson, you'll learn about the concept of variance in statistics. We'll discuss how variance is derived and what the equations of variance means.
wn.com/What Is Variance In Statistics
Get the full course at: http://www.MathTutorDVD.com
In this lesson, you'll learn about the concept of variance in statistics. We'll discuss how variance is derived and what the equations of variance means.
- published: 01 Feb 2013
- views: 156165
Statistics - Calculating Variance
- Order: Reorder
- Duration: 5:08
- Updated: 01 Nov 2008
- views: 306342
Statistics - Calculating Variance. I give the formula and show one example of finding variance.
For more free videos, visit http://PatrickJMT.com
Statistics - Calculating Variance. I give the formula and show one example of finding variance.
For more free videos, visit http://PatrickJMT.com
wn.com/Statistics Calculating Variance
Statistics - Calculating Variance. I give the formula and show one example of finding variance.
For more free videos, visit http://PatrickJMT.com
- published: 01 Nov 2008
- views: 306342
Range, variance and standard deviation as measures of dispersion | Khan Academy
- Order: Reorder
- Duration: 12:34
- Updated: 19 Apr 2010
- views: 370596
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/varian...
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Watch the next lesson: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/variance-of-a-population?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Missed the previous lesson?
https://www.khanacademy.org/math/probability/descriptive-statistics/box-and-whisker-plots/v/range-and-mid-range?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s Probability and Statistics channel:
https://www.youtube.com/channel/UCRXuOXLW3LcQLWvxbZiIZ0w?sub_confirmation=1
Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy
wn.com/Range, Variance And Standard Deviation As Measures Of Dispersion | Khan Academy
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Watch the next lesson: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/variance-of-a-population?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Missed the previous lesson?
https://www.khanacademy.org/math/probability/descriptive-statistics/box-and-whisker-plots/v/range-and-mid-range?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s Probability and Statistics channel:
https://www.youtube.com/channel/UCRXuOXLW3LcQLWvxbZiIZ0w?sub_confirmation=1
Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy
- published: 19 Apr 2010
- views: 370596
Statistics - Find the variance
- Order: Reorder
- Duration: 3:47
- Updated: 12 Sep 2011
- views: 106049
This video shows how to find the variance for a set of data. Take note that there are two formulas. One formula is used if the data represents a population. T...
This video shows how to find the variance for a set of data. Take note that there are two formulas. One formula is used if the data represents a population. The other is if the data represents a sample. For more videos please visit http://www.mysecretmathtutor.com
wn.com/Statistics Find The Variance
This video shows how to find the variance for a set of data. Take note that there are two formulas. One formula is used if the data represents a population. The other is if the data represents a sample. For more videos please visit http://www.mysecretmathtutor.com
- published: 12 Sep 2011
- views: 106049
Sample variance | Descriptive statistics | Probability and Statistics | Khan Academy
- Order: Reorder
- Duration: 10:38
- Updated: 21 Nov 2012
- views: 139617
Thinking about how we can estimate the variance of a population by looking at the data in a sample.
Practice this lesson yourself on KhanAcademy.org right now:...
Thinking about how we can estimate the variance of a population by looking at the data in a sample.
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Watch the next lesson: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/review-and-intuition-why-we-divide-by-n-1-for-the-unbiased-sample-variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Missed the previous lesson?
https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/variance-of-a-population?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s Probability and Statistics channel:
https://www.youtube.com/channel/UCRXuOXLW3LcQLWvxbZiIZ0w?sub_confirmation=1
Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy
wn.com/Sample Variance | Descriptive Statistics | Probability And Statistics | Khan Academy
Thinking about how we can estimate the variance of a population by looking at the data in a sample.
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Watch the next lesson: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/review-and-intuition-why-we-divide-by-n-1-for-the-unbiased-sample-variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Missed the previous lesson?
https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/variance-of-a-population?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s Probability and Statistics channel:
https://www.youtube.com/channel/UCRXuOXLW3LcQLWvxbZiIZ0w?sub_confirmation=1
Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy
- published: 21 Nov 2012
- views: 139617
Statistics: Sample variance | Descriptive statistics | Probability and Statistics | Khan Academy
- Order: Reorder
- Duration: 11:18
- Updated: 23 Jan 2009
- views: 403678
Using the variance of a sample to estimate the variance of a population
Watch the next lesson: https://www.khanacademy.org/math/probability/random-variables-to...
Using the variance of a sample to estimate the variance of a population
Watch the next lesson: https://www.khanacademy.org/math/probability/random-variables-topic/random_variables_prob_dist/v/random-variables?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Missed the previous lesson?
https://www.khanacademy.org/math/probability/descriptive-statistics/old-stats-videos/v/statistics-variance-of-a-population?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s Probability and Statistics channel:
https://www.youtube.com/channel/UCRXuOXLW3LcQLWvxbZiIZ0w?sub_confirmation=1
Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy
wn.com/Statistics Sample Variance | Descriptive Statistics | Probability And Statistics | Khan Academy
Using the variance of a sample to estimate the variance of a population
Watch the next lesson: https://www.khanacademy.org/math/probability/random-variables-topic/random_variables_prob_dist/v/random-variables?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Missed the previous lesson?
https://www.khanacademy.org/math/probability/descriptive-statistics/old-stats-videos/v/statistics-variance-of-a-population?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s Probability and Statistics channel:
https://www.youtube.com/channel/UCRXuOXLW3LcQLWvxbZiIZ0w?sub_confirmation=1
Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy
- published: 23 Jan 2009
- views: 403678
Variance of a population | Descriptive statistics | Probability and Statistics | Khan Academy
- Order: Reorder
- Duration: 8:05
- Updated: 20 Nov 2012
- views: 170593
Variance as a measure of, on average, how far the data points in a population are from the population mean
Practice this lesson yourself on KhanAcademy.org rig...
Variance as a measure of, on average, how far the data points in a population are from the population mean
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Watch the next lesson: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/sample-variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Missed the previous lesson?
https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/range-variance-and-standard-deviation-as-measures-of-dispersion?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s Probability and Statistics channel:
https://www.youtube.com/channel/UCRXuOXLW3LcQLWvxbZiIZ0w?sub_confirmation=1
Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy
wn.com/Variance Of A Population | Descriptive Statistics | Probability And Statistics | Khan Academy
Variance as a measure of, on average, how far the data points in a population are from the population mean
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/e/variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Watch the next lesson: https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/sample-variance?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Missed the previous lesson?
https://www.khanacademy.org/math/probability/descriptive-statistics/variance_std_deviation/v/range-variance-and-standard-deviation-as-measures-of-dispersion?utm_source=YT&utm;_medium=Desc&utm;_campaign=ProbabilityandStatistics
Probability and statistics on Khan Academy: We dare you to go through a day in which you never consider or use probability. Did you check the weather forecast? Busted! Did you decide to go through the drive through lane vs walk in? Busted again! We are constantly creating hypotheses, making predictions, testing, and analyzing. Our lives are full of probabilities! Statistics is related to probability because much of the data we use when determining probable outcomes comes from our understanding of statistics. In these tutorials, we will cover a range of topics, some which include: independent events, dependent probability, combinatorics, hypothesis testing, descriptive statistics, random variables, probability distributions, regression, and inferential statistics. So buckle up and hop on for a wild ride. We bet you're going to be challenged AND love it!
About Khan Academy: Khan Academy offers practice exercises, instructional videos, and a personalized learning dashboard that empower learners to study at their own pace in and outside of the classroom. We tackle math, science, computer programming, history, art history, economics, and more. Our math missions guide learners from kindergarten to calculus using state-of-the-art, adaptive technology that identifies strengths and learning gaps. We've also partnered with institutions like NASA, The Museum of Modern Art, The California Academy of Sciences, and MIT to offer specialized content.
For free. For everyone. Forever. #YouCanLearnAnything
Subscribe to KhanAcademy’s Probability and Statistics channel:
https://www.youtube.com/channel/UCRXuOXLW3LcQLWvxbZiIZ0w?sub_confirmation=1
Subscribe to KhanAcademy: https://www.youtube.com/subscription_center?add_user=khanacademy
- published: 20 Nov 2012
- views: 170593
How to calculate Standard Deviation and Variance
- Order: Reorder
- Duration: 5:05
- Updated: 20 Nov 2010
- views: 450939
Tutorial on calculating the standard deviation and variance for statistics class. The tutorial provides a step by step guide.
Like us on: http://www.facebook....
Tutorial on calculating the standard deviation and variance for statistics class. The tutorial provides a step by step guide.
Like us on: http://www.facebook.com/PartyMoreStudyLess
Related Videos:
How to Calculate Mean and Standard Deviation Using Excel
http://www.youtube.com/watch?v=efdRmGqCYBk
Why are degrees of freedom (n-1) used in Variance and Standard Deviation
http://www.youtube.com/watch?v=92s7IVS6A34
Playlist of z scores
http://www.youtube.com/course?list=EC6157D8E20C151497
David Longstreet Professor of the Universe
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Professor of the Universe: David Longstreet http://www.linkedin.com/in/davidlongstreet/
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wn.com/How To Calculate Standard Deviation And Variance
Tutorial on calculating the standard deviation and variance for statistics class. The tutorial provides a step by step guide.
Like us on: http://www.facebook.com/PartyMoreStudyLess
Related Videos:
How to Calculate Mean and Standard Deviation Using Excel
http://www.youtube.com/watch?v=efdRmGqCYBk
Why are degrees of freedom (n-1) used in Variance and Standard Deviation
http://www.youtube.com/watch?v=92s7IVS6A34
Playlist of z scores
http://www.youtube.com/course?list=EC6157D8E20C151497
David Longstreet Professor of the Universe
Like us on: http://www.facebook.com/PartyMoreStudyLess
Professor of the Universe: David Longstreet http://www.linkedin.com/in/davidlongstreet/
MyBookSucks.Com
- published: 20 Nov 2010
- views: 450939
Statistics 101: Variance and its Sampling Distribution
- Order: Reorder
- Duration: 27:20
- Updated: 06 Apr 2013
- views: 18762
Statistics 101: Variance and its Sampling Distribution
In this video we begin to make inferences about variances. To begin I offer several short, real-world sc...
Statistics 101: Variance and its Sampling Distribution
In this video we begin to make inferences about variances. To begin I offer several short, real-world scenarios where variance becomes important in its own right. Next we compare the sampling distribution of sample means to the sampling distribution of variances. This leads us to a new distribution; the chi-square distribution. We end by learning how to find critical values in the chi-square table. Enjoy!
For my complete video library organized by playlist, please go to my video page here:
http://www.youtube.com/user/BCFoltz/videos?flow=list&view;=1&live;_view=500&sort;=dd
wn.com/Statistics 101 Variance And Its Sampling Distribution
Statistics 101: Variance and its Sampling Distribution
In this video we begin to make inferences about variances. To begin I offer several short, real-world scenarios where variance becomes important in its own right. Next we compare the sampling distribution of sample means to the sampling distribution of variances. This leads us to a new distribution; the chi-square distribution. We end by learning how to find critical values in the chi-square table. Enjoy!
For my complete video library organized by playlist, please go to my video page here:
http://www.youtube.com/user/BCFoltz/videos?flow=list&view;=1&live;_view=500&sort;=dd
- published: 06 Apr 2013
- views: 18762
Simple explanation: Standard Deviation vs Variance?
- Order: Reorder
- Duration: 2:12
- Updated: 03 Aug 2015
- views: 2470
The most intuitive explanation of why we use standard deviation and variance measures, and why they're not the same thing!
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The most intuitive explanation of why we use standard deviation and variance measures, and why they're not the same thing!
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Ever wondered why we divide by N-1 for sample variance?
https://www.youtube.com/watch?v=9Z72nf6N938&feature;=youtu.be
Get access to my comprehensive stats course on HYPOTHESIS TESTING for only $3.00!
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**
Keywords: statistics, statistics help, statistics tutor, statistics tuition, hypothesis testing, regression analysis, university help, stats help, simple regression, multiple regression, econometrics, variance, standard deviation, variation
wn.com/Simple Explanation Standard Deviation Vs Variance
The most intuitive explanation of why we use standard deviation and variance measures, and why they're not the same thing!
SUBSCRIBE at: https://www.youtube.com/subscription_center?add_user=quantconceptsedu
LIKE my Facebook page and ask me a question! I'll answer ASAP: https://www.facebook.com/freestatshelp
Ever wondered why we divide by N-1 for sample variance?
https://www.youtube.com/watch?v=9Z72nf6N938&feature;=youtu.be
Get access to my comprehensive stats course on HYPOTHESIS TESTING for only $3.00!
https://www.udemy.com/simplestats/?couponCode=YTT
**
Keywords: statistics, statistics help, statistics tutor, statistics tuition, hypothesis testing, regression analysis, university help, stats help, simple regression, multiple regression, econometrics, variance, standard deviation, variation
- published: 03 Aug 2015
- views: 2470
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17:04
What is Variance in Statistics?
Get the full course at: http://www.MathTutorDVD.com
In this lesson, you'll learn about the...
published: 01 Feb 2013
What is Variance in Statistics?
What is Variance in Statistics?
- Report rights infringement
- published: 01 Feb 2013
- views: 156165
5:08
Statistics - Calculating Variance
Statistics - Calculating Variance. I give the formula and show one example of finding vari...
published: 01 Nov 2008
Statistics - Calculating Variance
Statistics - Calculating Variance
- Report rights infringement
- published: 01 Nov 2008
- views: 306342
12:34
Range, variance and standard deviation as measures of dispersion | Khan Academy
Practice this lesson yourself on KhanAcademy.org right now:
https://www.khanacademy.org/m...
published: 19 Apr 2010
Range, variance and standard deviation as measures of dispersion | Khan Academy
Range, variance and standard deviation as measures of dispersion | Khan Academy
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- published: 19 Apr 2010
- views: 370596
3:47
Statistics - Find the variance
This video shows how to find the variance for a set of data. Take note that there are two ...
published: 12 Sep 2011
Statistics - Find the variance
Statistics - Find the variance
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- published: 12 Sep 2011
- views: 106049
10:38
Sample variance | Descriptive statistics | Probability and Statistics | Khan Academy
Thinking about how we can estimate the variance of a population by looking at the data in ...
published: 21 Nov 2012
Sample variance | Descriptive statistics | Probability and Statistics | Khan Academy
Sample variance | Descriptive statistics | Probability and Statistics | Khan Academy
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- published: 21 Nov 2012
- views: 139617
11:18
Statistics: Sample variance | Descriptive statistics | Probability and Statistics | Khan Academy
Using the variance of a sample to estimate the variance of a population
Watch the next le...
published: 23 Jan 2009
Statistics: Sample variance | Descriptive statistics | Probability and Statistics | Khan Academy
Statistics: Sample variance | Descriptive statistics | Probability and Statistics | Khan Academy
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- published: 23 Jan 2009
- views: 403678
8:05
Variance of a population | Descriptive statistics | Probability and Statistics | Khan Academy
Variance as a measure of, on average, how far the data points in a population are from the...
published: 20 Nov 2012
Variance of a population | Descriptive statistics | Probability and Statistics | Khan Academy
Variance of a population | Descriptive statistics | Probability and Statistics | Khan Academy
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- published: 20 Nov 2012
- views: 170593
5:05
How to calculate Standard Deviation and Variance
Tutorial on calculating the standard deviation and variance for statistics class. The tut...
published: 20 Nov 2010
How to calculate Standard Deviation and Variance
How to calculate Standard Deviation and Variance
- Report rights infringement
- published: 20 Nov 2010
- views: 450939
27:20
Statistics 101: Variance and its Sampling Distribution
Statistics 101: Variance and its Sampling Distribution
In this video we begin to make inf...
published: 06 Apr 2013
Statistics 101: Variance and its Sampling Distribution
Statistics 101: Variance and its Sampling Distribution
- Report rights infringement
- published: 06 Apr 2013
- views: 18762
2:12
Simple explanation: Standard Deviation vs Variance?
The most intuitive explanation of why we use standard deviation and variance measures, and...
published: 03 Aug 2015
Simple explanation: Standard Deviation vs Variance?
Simple explanation: Standard Deviation vs Variance?
- Report rights infringement
- published: 03 Aug 2015
- views: 2470
What is Variance in Statistics?...
Statistics - Calculating Variance...
Range, variance and standard deviation as measures...
Statistics - Find the variance...
Sample variance | Descriptive statistics | Probabi...
Statistics: Sample variance | Descriptive statisti...
Variance of a population | Descriptive statistics ...
How to calculate Standard Deviation and Variance...
Statistics 101: Variance and its Sampling Distribu...
Simple explanation: Standard Deviation vs Variance...
-
Lyrics list:lyrics
-
Chapter Us
-
Wipe Away The Debt
-
Let's Run
-
Misfit Toys And Those Who Care
-
Oh, Wicked Witch
Chapter Us
(VERSE 1)
Now stop me if you've heard this one before
And I promise I'll change my tune
But if not, I'll sing you to sleep like a songbird
And swear on my feathers it's true
So draw the shades and close your eyes
And put on your sunglasses too
Cause where we're going
The sun's still glowing
And your eyes can't adjust to all of this new
(PRE-CHORUS)
So hush, be quiet, let me speak
No, this can't wait until next week so
(CHORUS)
Hey, are you ready for this?
It's 5th finger promise, sealed with a kiss
I'm an open book,
I'm a silhouette
I'm a shade of what I used to be
So tell me once, tell me twice, and tell me again
"You and I, we were made for this"
Turn to chapter you,
And you will find chapter me
(VERSE 2)
I'm hoping these words ring true
Cause I would save my words for you
And then listen to your breathing
As we both stared at the ceiling, thinking
"Wouldn't it be great
If all the ghosts that haunted us
Stopped til daybreak?"
Cause I'm tired, oh so tired...
(PRE-CHORUS)
So hush, be quiet, let me speak
No, this can't wait until next week so
So hush, be quiet, let me speak
No, this can't wait until
(CHORUS)
Hey, are you ready for this?
It's 5th finger promise, sealed with a kiss
I'm an open book,
I'm a silhouette
I'm a shade of what I used to be
So tell me once, tell me twice, and tell me again
"You and I, we were made for this"
Turn to chapter you,
And you will find chapter me
(BRIDGE)
So on this fateful prom night
We won't have to dance in my garage
I spent 15 minutes with you
And spent the whole night thanking God
So lets ditch this after-party
And make one of our own
Just give me half an hour
And we can both be gone.
(CHORUS)
Hey, are you ready for this?
It's 5th finger promise, sealed with a kiss
I'm an open book,
I'm a silhouette
I'm a shade of what I used to be
So tell me once, tell me twice, and tell me again
"You and I, we were made for this"
Turn to chapter you,
photo: Via YouTube
Baby with Zika-related microcephaly born at New Jersey hospital
Edit CNN 01 Jun 2016
(CNN)A baby with Zika virus-related microcephaly was born in New Jersey on Tuesday, hospital officials said. The baby and mother are stable and doing well following the cesarean delivery, said Dr. Abdulla Al-Kahan, director of maternal and fetal medicine at Hackensack University Medical Center. "The mother is stable, obviously sad, which is the normal emotional reaction given the situation," he said ... Read More ... CDC confirmation ... ....
photo: AP / Nick Ut
[BREAKING] Video: Murder-Suicide Places UCLA Campus On Lockdown
Edit WorldNews.com 01 Jun 2016
The UCLA campus was placed on lockdown just after 10 a.m. local time Wednesday when two men were killed in a murder/suicide in an on-campus shooting that prompted a massive response from local and federal law enforcement, the Los Angeles Police Department told The Los Angeles Times. "The campus is now safe," Los Angeles Police Chief Charlie Beck told reporters in a short news conference ... The FBI and the U.S ... – WN.com, Jack Durschlag. ....
photo: WN / Jamal Penjweny
Iraq’s Green Zone Turns Red, Signals Phase Four Of Pacification
Edit WorldNews.com 01 Jun 2016
Article by WN.com Correspondent Dallas DarlingWhen 150 Iraqi demonstrators were brutally beaten or shot to death trying to breach the Green Zone, it signaled Phase Four of the U.S.-led Global Police State and its attempt to pacify geopolitical spheres of influence, public spaces and war of narratives ... “Curse the government that kills its children in cold blood.” . This prophetic condemnation was actually mirrored by U.S ... May 28, 2016.....
photo: AP / Department of National Parks, Wildlife and Plant Conservation
Dozens of dead tiger cubs found in freezer at Thai temple
Edit The Irish Times 01 Jun 2016
Thai wildlife authorities found 40 tiger cub carcasses in a freezer in Thailand’s infamous Tiger Temple on Wednesday as they removed live animals in response to international pressure over suspected trafficking and abuse ... But the temple has been investigated for suspected links to wildlife trafficking and abuse ... Reuters. . . ....
photo: AP / Lim Byung-shick/Yonhap via AP
4 Dead, 10 Injured In Seoul Subway Explosion
Edit WorldNews.com 01 Jun 2016
Four people are dead and 10 others were injured Wednesday when an explosion occurred at a subway construction site near the South Korean capital of Seoul, The Associated Press reported.Workers at the construction site were welding iron bars 15 meters (49 feet) below ground when the explosion occurred, according to officials who did not want to be identified from the Gyeonggi Province Fire and Disaster Headquarters said....
« back to news headlines
Colin Bennett on volatility trading. Part 1: The evolution of volatility products (Eurex Frankfurt AG)
Edit Public Technologies 01 Jun 2016
Original VIX suffered from launch of variance swaps at the same time. While the original S&P100; VIX was a significant innovation in 1993, the product became almost immediately out-dated as variance swaps were also launched at a similar time ... However as the pay-out of a delta hedged option is variance, not volatility, variance is mathematically the correct measure of deviation ... Volatility Indexes are now usually based on variance....
Colin Bennett on volatility trading. Part 1: The evolution of volatility products (Englisch) (Eurex Frankfurt AG)
Edit Public Technologies 01 Jun 2016
Original VIX suffered from launch of variance swaps at the same time. While the original S&P100; VIX was a significant innovation in 1993, the product became almost immediately out-dated as variance swaps were also launched at a similar time ... However as the pay-out of a delta hedged option is variance, not volatility, variance is mathematically the correct measure of deviation ... Volatility Indexes are now usually based on variance....
Abortion clinic suit settled
Edit Springfield News-Sun 01 Jun 2016
Last week Richard Hodges, the state’s health director, granted a variance to the Planned Parenthood clinic in Cincinnati, saying it satisfied the state’s emergency back-up requirement because the clinic has agreements with four physicians who can give patient care in an emergency. The variance is good through May of next year ... to get a variance....
PSC Sets Time To Respond To Ameren Missouri Request (Missouri Public Service Commission)
Edit Public Technologies 01 Jun 2016
The Missouri Public Service Commission has established the date for those seeking to respond to a request filed by Ameren Missouri for a variance from certain portions of the PSC's demand-side program rules ......
Environmental Quality Board of Review (Suffolk County, NY)
Edit Public Technologies 01 Jun 2016
(Source ... The Board of Review hears requests for variances and waivers to the county's requirements for water and sewage disposal for new construction, and for storage of toxic or hazardous materials, as stated in the Suffolk County Sanitary Code ... (noodl. 33906318) ....
Neighbors have had it with South Side landfill
Edit The Columbus Dispatch 01 Jun 2016
A landfill piled high with asphalt and concrete rubble along Alum Creek Drive has been a towering pain to Eileen Neale and her neighbors, who live across the street from the eyesore. The residents of Alum Crest Acres say they’re tired of the noise and dust that fill their neighborhood ... City inspectors are trying to figure out whether to cite the landfill for zoning violations and are checking to see whether it has a zoning variance....
The New Skylanders Game is Like Diablo For Kids
Edit Gamespot 01 Jun 2016
As a parent, I've always thought of the Skylanders series as a gateway for kids to other games ... That customisation extends into the game itself ... But will there be a huge variance in loot, compelling you to keep playing and keeping you in a constant state of swapping out your gear? Will this increase the replayability of the game? It's hard to tell right now, but it is an exciting new direction for the Skylanders franchise to take ... ....
Budget Bill amounts for Vectren South gas customers to drop nearly 30 percent (Vectren Corporation)
Edit Public Technologies 01 Jun 2016
(Source. Vectren Corporation) 619d1773-3fe2-4b36-9430-8b7dc9f9c27b.pdf News Release. Vectren Corporation One Vectren Square Evansville, IN 47708 FOR IMMEDIATE RELEASE. June 1, 2016. Media contact ... Evansville, Ind ... "This adjustment should be reflected on June billing statements." ... Some Vectren Budget Bill customers may not see as large of a decrease due to the timing of their enrollment or variances in historical consumption....
Michael Kors is winning again
Edit Business Insider 01 Jun 2016
Michael Kors is in the middle of pulling off a comeback. The company reported that retail net sales increased 22% for the most recent quarter. Comparable sales improved by 0.3%, which isn't much, but shows some promise ... Shares surged as much as 10% on the news ... Hit your stride. #sunkissed ... "That said, even with the variances, we believe that Michael Kors is showing a much better growth story than many rival brands, including Coach." ... ....
St Lucia ruling party rejects
Edit Jamaica Observer 01 Jun 2016
CASTRIES, St Lucia (CMC) — Prime Minister Dr Kenny Anthony has dismissed a poll by the Barbados-based Caribbean Development and Research Services Inc (CADRES) that predicts a close contest in the June 6 general election ... The SLP said that traditionally, voter turnout here is 55 per cent and that puts CADRES results at variance with historical trends, because it suggests an 86 per cent voter turnout ... ....
Senate backs even more in reserves, merit-based pay raises
Edit The Miami Herald 01 Jun 2016
Senate Republicans said Tuesday their proposed North Carolina budget adjustments puts even more money aside in reserves to soften economic downturns than the House spending plan did while emphasizing performance-based raises for state employees and teachers ... The House approved its competing proposal less than two weeks ago ... Pat McCrory proposed ... and there's a large teacher pay raise.". There are other variances with the House plan ... ....
Wheat imports imminent
Edit Yahoo Daily News 01 Jun 2016
Media reports mention that there is a ‘question mark’ on the wheat production estimates for 2015-16. One cannot fault the government for lower output this year, which could be due to combined effect of two successive droughts and some policy-related issues—their impact cannot be apportioned anyway. But the concern is that official data appears to be at variance with market conditions ... These are definite indicators of a low output....
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