1. Scope
1.1 This guide covers terminology useful for the preparation and interpretation of precision and bias statements.
1.2 In formulating precision and bias statements, it is important to understand the statistical concepts involved and to identify the major sources of variation that affect results. Appendix X1 provides a brief summary of these concepts.
1.3 To illustrate the statistical concepts and to demonstrate some sources of variation, a hypothetical data set has been analyzed in Appendix X2. Reference to this example is made throughout this guide.
1.4 It is difficult and at times impossible to ship nuclear materials for interlaboratory testing. Thus, precision statements for test methods relating to nuclear materials will ordinarily reflect only within-laboratory variation.
2. Referenced Documents (purchase separately) 
The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ASTM Standards
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
ANSI Standard
ANSIN15.5 Statistical Terminology and Notation for Nuclear Materials Management
Index Terms
bias; error models; precision; statistics;
ICS Code
ICS Number Code 27.120.01 (Nuclear energy in general)
DOI: 10.1520/C1215-92R06
ASTM International is a member of CrossRef.
Citing ASTM Standards
[Back to Top]
