Robustness properties of multivariate exponentially-weighted moving average control charts

Robustness properties of multivariate exponentially-weighted moving average control charts

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Article ID: iaor20032135
Country: United States
Volume: 19
Issue: 1
Start Page Number: 31
End Page Number: 38
Publication Date: Jan 2003
Journal: Quality and Reliability Engineering International
Authors: , ,
Keywords: control charts
Abstract:

In this paper, the robustness of the multivariate exponentially-weighted moving average (MEWMA) control chart to non-normal data is examined. Two non-normal distributions of interest are the multivariate distribution and the multivariate gamma distribution. Recommendations for constructing MEWMA control charts when the normality assumption may be violated are provided.

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