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https://www.nist.gov/glossary-term/17991

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 Back to the OSAC Lexicon

# Accuracy

The closeness of agreement between a test result and the accepted reference value. 1) In practice, the accepted reference value is substituted for the true value. 2) The term "accuracy," when applied to a set of test or measurement results, involves a combination of random components and a common systematic error or bias component. 3) Accuracy refers to a combination of trueness and precision.

06/12/2023

**Standard Source**

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*Reprinted, with permission, from ASTM, copyright ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. A copy of the complete standard may be purchased from ASTM International, https://www.astm.org*

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