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- Joint control charts for monitoring location and dispersion
- Universidade Estadual Paulista (UNESP)
- The T-2 and the generalized variance vertical bar S vertical bar charts are used for monitoring the mean vector and the covariance matrix of multivariate processes. In this article, we propose for bivariate processes the use of the T-2 and the VMAX charts. The points plotted on the VMAX chart correspond to the maximum of the sample variances of the two quality characteristics. The reason to consider the VMAX statistic instead of the generalized variance vertical bar S vertical bar is the user's familiarity with the computation of simple sample variances; we can't say the same with regard to the computation of the generalized variance vertical bar S vertical bar.
- 14th Issat International Conference on Reliability and Quality In Design, Proceedings. Piscataway: Int Soc Sci Appl Technol, p. 89-93, 2008.
- Int Soc Sci Appl Technol
- Multivariate Processes
- Hotelling Chart
- VMAX chart
- Acesso restrito
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