In this study a method will be developed to test whether the subgroups formed for T^2 control charts, a multivariate process control tool, are rational. In an earlier work we suggested that a comparison of the mean square successive difference variance to the usual variance could be used to test the rationality of the subgroups in the univariate control charts. The method proposed in this paper is a multivariate extension of testing the equality of two variance estimators.

Date of creation, presentation, or exhibit



Presented at the 2003 North East Decision Sciences Institute Annual Meeting Proceedings, Providence, RI, March 27-29, 2003.

Note: imported from RIT’s Digital Media Library running on DSpace to RIT Scholar Works in February 2014.

Document Type

Conference Paper

Department, Program, or Center

Accounting (SCB)


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