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: | Runger George C., Borror Connie M., Testik Murat C. |
Keywords: | control charts |
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.