ASTM International Standard Terminology Relating to Quality and Statistics ASTM E456-13A(2017)e4

This standard is the general terminology standard for terms defined in the standards of Committee E11 on Quality and Statistics. A term in this standard which lists an attribution to an E11 technical standard indicates that the standard is normative for that term. Term definitions that are similar to ISO 3534 will be noted in this standard, but ISO 3534 will not be considered normative for any E11 terms. This standard, among other terminologies, provides the definition for acceptance quality limit (AQL), which is the worst tolerable process average when a continuing series of lots is submitted for acceptance sampling. It also explains collaborative study as an interlaboratory study in which each laboratory uses the defined method of analysis to analyze identical portions of homogeneous materials to assess the performance characteristics obtained for that method of analysis.