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Gini's Mean Difference Based Time-Varying EWMA Charts

Gini's Mean Difference Based Time-Varying EWMA Charts Abstract The concept of time-varying control limits with reference to EWMA charts is briefly introduced and for the asymptotic control charts proposed by Riaz and Abbasi (Interstat : 3, 2007), a proposal of time-varying control limits is made. The proposed limits are subsequently compared with those of Riaz and Abbasi (Interstat : 3, 2007) asymptotic charts and different time-varying EWMA control structures based on the sample range R , the sample standard deviation S and Downton's estimator σ*. The probability of detection of outliers is used as comparison criterion. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Economic Quality Control de Gruyter

Gini's Mean Difference Based Time-Varying EWMA Charts

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Publisher
de Gruyter
Copyright
Copyright © 2009 by the
ISSN
1869-6147
eISSN
1869-6147
DOI
10.1515/EQC.2009.269
Publisher site
See Article on Publisher Site

Abstract

Abstract The concept of time-varying control limits with reference to EWMA charts is briefly introduced and for the asymptotic control charts proposed by Riaz and Abbasi (Interstat : 3, 2007), a proposal of time-varying control limits is made. The proposed limits are subsequently compared with those of Riaz and Abbasi (Interstat : 3, 2007) asymptotic charts and different time-varying EWMA control structures based on the sample range R , the sample standard deviation S and Downton's estimator σ*. The probability of detection of outliers is used as comparison criterion.

Journal

Economic Quality Controlde Gruyter

Published: Oct 1, 2009

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