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Not Precise |
Precise
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Not Accurate
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Accurate
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Used in measurement; the difference between the average of a number of readings and the true, or target, value.
i. In measurement - the difference between the observed measurement and the true value (according to a reference standard). Essentially the same thing as accuracy.
ii. In sampling it is any factor that causes the sample characteristics to vary from those of the population.
The variability of a process, usually measured by the variance or standard deviation.
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