Some relationships between gage R&R criteria

William H. Woodall, Connie M. Borror

Research output: Contribution to journalArticlepeer-review

47 Scopus citations


In this paper, several commonly used gage repeatability and reproducibility (R&R) acceptance criteria are discussed. The number of distinct categories (ndc) is equivalent to an acceptance criterion based on another standard metric, the ratio of the estimated measurement system standard deviation to the estimated overall standard deviation of the measurements. This implies that the criterion based on ndc could be considered redundant. Several acceptance criteria are revisited and compared, including a discussion of more objective measures of capability based on misclassification rates. The relationship between ndc and the discrimination ratio is also given.

Original languageEnglish (US)
Pages (from-to)99-106
Number of pages8
JournalQuality and Reliability Engineering International
Issue number1
StatePublished - Feb 2008


  • Gage R&R study
  • Gauge studies
  • Measurement system analysis
  • Misclassification rates
  • Variance components

ASJC Scopus subject areas

  • Safety, Risk, Reliability and Quality
  • Management Science and Operations Research


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