Journal of the Korean Data and Information Science Society
- Volume 15 Issue 4
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- Pages.1003-1010
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- 2004
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- 1598-9402(pISSN)
Properties of VSI CUSUM Chart for Monitoring Dispersion Matrix
- Chang, Duk-Joon (Dept. of Statistics, Changwon National University) ;
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Shin, Jae-Kyoung
(Dept. of Statistics, Changwon National University)
- Published : 2004.11.30
Abstract
Properties of the variable sampling interval(VSI) CUSUM chart 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 Shewhart and CUSUM charts are also investigated.