Journal of the Korean Data and Information Science Society
- 제15권3호
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- Pages.633-644
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- 2004
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- 1598-9402(pISSN)
Exponentially Weighted Moving Average Control Charts for Dispersion Matrix
- Chang, Duk-Joon (Dept. of Statistics, Changwon National University) ;
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Shin, Jae-Kyoung
(Dept. of Statistics, Changwon National University)
- 발행 : 2004.08.31
초록
Exponentially Weighted Moving Average(EWMA) control chart for variance-covariance matrix of several quality characteristics based on accumulate-combine approach has proposed. Numerical computations show that multivariate EWMA chart based on accumulate-combine approach is more efficient than corresponding multivariate EWMA chart based on combine-accumulate approach.