Robust multiple comparisons |
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| Authors: | Charles W Dunnett |
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| Institution: | Departments of Mathematical Sciences and Clinical Epidemiology and Biostatistics , McMaster University , Hamilton, Canada, LBS 1K1 |
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| Abstract: | The use of several robust estimators of location with their associated variance estimates in a modified T-method for pairwise multiple comparisons between treatment means was compared with the sample mean and variance and with the k-sample rank sum test. The methods were compared with respect to the stability of their experimentwise error rates under a variety of non-normal situations (robustness of validity) and their average confidence interval lengths (robustness of efficiency). |
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| Keywords: | hisquare estimator Hampel estimator modified maximum likelihood multiple comparisons rank sum test robustness trimming T-method wave estimator |
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