what is percision in chemistry class 11
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A picture can paint a thousand words, and the following images should help give you a quick mental picture of what is meant by precision.
Precision is a term used to describe data from an experiment that has been repeated several times. If the experiment yields a tightly grouped set of data points, then it has high precision; the greater the scatter of data points, the lower the precision.
To quantify precision, in other words to describe it with a number, scientists use such measures as standard deviation and variance.
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Precision refers to the amount of information that is conveyed by a number in terms of its digits; it shows the closeness of two or more measurements to each other. It is independent of accuracy.
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