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A simulation study had been carried out to compare the Type I error and power of S1, a statistic recommended by Babu et al. (1999) for testing the equality of location parameters for skewed distributions. Othman et al. (in press) showed that this statistic is robust to the underlying populations and is also powerful. In our work, we modified this statistic by replacing the standard errors...
Hotelling's T2 chart is a popular tool for monitoring statistical process control. However, this chart is sensitive in the presence of outliers. To alleviate the problem, this paper proposed alternative Hotelling's T2 charts for individual observations using robust location and scale matrix instead of the usual mean vector and the covariance matrix, respectively. The usual mean vector in the Hotelling...
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