Properties of VSI Charts for Monitoring Dispersion Matrix

  • Chang, Duk-Joon (Department of Statistics, Changwon National University) ;
  • Kwon, Yong-Man (Department of Computer Science and Statistics, Chosun University)
  • Published : 2004.04.30

Abstract

Properties of the variable sampling interval(VSI) control charts for monitoring dispersion matrix of related quality characteristics are investigated. Performances of the proposed charts are evaluated for matched fixed sampling interval(FSI) and VSI charts in terms of average time to signal(ATS) and average number of samples to signal (ANSS). Average number of swiches(ANSW) of the proposed VSI charts are also investigated.

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