Accuracy and precision

Accuracy, in science, engineering, industry and statistics, is the degree of conformity of a measured/calculated quantity to its actual (true) value. Precision (also called reproducibility or repeatability) is the degree to which further measurements or calculations will show the same or similar results.

Related Topics:
Science - Engineering - Industry - Statistics - Reproducibility - Repeatability

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The results of a measurement or calculation can be accurate but not precise, precise but not accurate, neither, or both; if a result is both accurate and precise, it is called valid.

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The related terms in surveying are error (random variability in research) and bias (nonrandom or directed effects caused by a factor or factors unrelated by the independent variable).

Related Topics:
Survey - Independent variable

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