SS-ISO-5725-3 Accuracy (trueness and precision) of measurement methods and results - Part 3: Intermediate measures of precision of a standard measurement method


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1.1 This part of ISO 5725 specifies four intermediate precision measure due to changes in observation conditions (time, calibration, operator and equipment) within a laboratory. These intermediate measures can be established by an experiment within a specific laboratory or by an interlaboratory experiment. Furthermore, this part of ISO 5725 a) discusses the implications of the definitions of intermediate precision measures; b) presents guidance on the interpretation and application of the estimates of intermediate precision measures in practical situations; c) does not provide any measure of the errors in estimating intermediate precision measures; d) does not concern itself with determining the trueness of the measurement method itself, but does discuss the connections between trueness and measurement conditions. 1.2 This part of ISO 5725 is concerned exclusively with measurement methods which yield measurements on a continuous scale and give a single value as the test result, although this single value may be the outcome of a calculation from a set of observations.

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Designation Name

SS-ISO 5725-3

Revision Level




Publication Date

Jan. 24, 2003



Page Count


International Equivalent

ISO 5725-3:1994 + Cor 1:2001(IDT)