Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
STANDARD published on 1.10.2020
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Designation standards: ASTM E177-20
Publication date standards: 1.10.2020
The number of pages: 10
Approximate weight : 30 g (0.07 lbs)
Country: American technical standard
Category: Technical standards ASTM
The purpose of this practice is to present concepts necessary to the understanding of the terms “precision” and “bias” as used in quantitative test methods. This practice also describes methods of expressing precision and bias and, in a final section, gives examples of how statements on precision and bias may be written for ASTM test methods. A statement of precision allows potential users of a test method to assess in general terms the test method’s usefulness with respect to variability in proposed applications.
Keywords:
accepted reference value, accuracy, bias, interlaboratory study, precision, precision conditions, repeatability, reproducibility, standard deviation,, ICS Number Code 19.020 (Test conditions and procedures in general)