Article ID: | iaor201528930 |
Volume: | 31 |
Issue: | 6 |
Start Page Number: | 1089 |
End Page Number: | 1097 |
Publication Date: | Oct 2015 |
Journal: | Quality and Reliability Engineering International |
Authors: | Sparks Ross |
Keywords: | statistics: general, statistics: multivariate |
Hotelling's T2 statistic is the default control statistic for continuous multivariate data, but there are dangers in applying this statistic without the appropriate level of checks and balances. This paper discusses the potential issues with using the Hotelling's T2 statistic when the quality variable measures are highly correlated and provides some solutions that will help mitigate the risks with applying the Hotelling's T2 control charts in such practical examples.