- published: 28 Sep 2015
- views: 2863615
In the fields of science, engineering, industry and statistics, the accuracy of a measurement system is the degree of closeness of measurements of a quantity to that quantity's actual (true) value. The precision of a measurement system, also called reproducibility or repeatability, is the degree to which repeated measurements under unchanged conditions show the same results. Although the two words reproducibility and repeatability can be synonymous in colloquial use, they are deliberately contrasted in the context of the scientific method.
A measurement system can be accurate but not precise, precise but not accurate, neither, or both. For example, if an experiment contains a systematic error, then increasing the sample size generally increases precision but does not improve accuracy. The result would be a consistent yet inaccurate string of results from the flawed experiment. Eliminating the systematic error improves accuracy but does not change precision.
A measurement system is designated valid if it is both accurate and precise. Related terms include bias (non-random or directed effects caused by a factor or factors unrelated to the independent variable) and error (random variability).
Virgin
I haven't always stuck by you
Even though you've been with me
And I've done things I wish you hadn't seen
And I have seen things I wish you'd didn't know
But because you fogive I forgive myself and let go
Jesus give me a virgin mind and a virgin soul
Make my heart so set on you that it can't let go
Take all the things I've seen wash me with your purity
Take all the things I've done cover me with your blood
I haven't always stuck by you
Even though you were with me
But now as I see you on the cross of Calvary
Can't bring myself to hurt you more
So now all that I'll do is only what you'd have me do
It's all for you
Jesus give me a virgin mind and a virgin soul
Make my heart so set on you that it can't let go
Take all the things I've seen wash me with your purity
Take all the things I've done cover me with your blood
I cry out to you and I repent
I cry with you and I repent
I cry out to you and I repent
I cry with you and I repent
Transform these bitter tears with your mercy
Jesus give me a virgin mind and a virgin soul
Make my heart so set on you that it can't let go
Take all the things I've seen wash me with your purity
Take all the things I've done cover me with your blood
Cover me with your blood
Cover me with your blood
Cover me with your blood