ASTM E2655-14(2020)

Podrobné informace

Označení: ASTM E2655-14(2020)

Datum vydání: 01.01.2020

Stran: 7

Země: Americká technická norma

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Anotace

This guide provides concepts necessary for understanding the term “uncertainty” when applied to a quantitative test result. Several measures of uncertainty can be applied to a given measurement result; the interpretation of some of the common forms is described. This guide describes methods for expressing test result uncertainty and relates these to standard statistical methodology. Relationships between uncertainty and concepts of precision and bias are described. This guide also presents concepts needed for a laboratory to identify and characterize components of method performance. Elements that an ASTM method can include to provide guidance to the user on estimating uncertainty for the method are described. This guide describes some of the types of data that the laboratory can use as the basis for reporting uncertainty.


Keywords:
measurement error, precision, propagation of errors, random error, systematic error, test results, Type A, Type B, uncertainty,, ICS Number Code 17.020 (Metrology and measurement in general)