JSM 2005 - Toronto

Abstract #304846

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Legend: = Applied Session, = Theme Session, = Presenter
Activity Number: 234
Type: Contributed
Date/Time: Tuesday, August 9, 2005 : 8:30 AM to 10:20 AM
Sponsor: Section on Quality and Productivity
Abstract - #304846
Title: Comparison of Multivariate Control Charts for Process Dispersion
Author(s): Jose A. Vargas*+
Companies: National University of Colombia
Address: Ciudad Universitaria, Bogota, , Colombia
Keywords: Multivariate process control ; Robust estimation ; Control Charts ; outliers
Abstract:

In this paper, we compare four multivariate control charts for process dispersion in the retrospective analysis of a historical dataset. Among the schemes compared is a new control chart based on a robust estimation of the variance covariance matrix proved to be effective in detecting outliers due to changes in the process dispersion matrix.

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