A COMPARISON OF SOME ROBUST BIVARIATE CONTROL CHARTS FOR INDIVIDUAL OBSERVATIONS
Journal Title: International Journal for Quality Research - Year 2014, Vol 8, Issue 2
Abstract
This paper proposed and considered some bivariate control charts to monitor individual observations from a statistical process control. Usual control charts which use mean and variance-covariance estimators are sensitive to outliers. We consider the following robust alternatives to the classical Hoteling's T2: T2MedMAD, T2MCD, T2MVE a simulation study has been conducted to compare the performance of these control charts. Two real life data are analyzed to illustrate the application of these robust alternatives.
Authors and Affiliations
Moustafa Omar Ahmed Abu - Shawiesh, Florence George, B. M. Golam Kibria
Keywords
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