Empirical power comparisons of two mrpp rank tests |
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| Authors: | T.S Tracy I.H Tajuddin |
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| Affiliation: | 1. Department of Mathematics , University of Windsor , Windsor, Ontario, Canada;2. Department of Statistics , University of Karachi , Karachi, Pakistan |
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| Abstract: | Simulated powers of the MRPP two-sample rank test statistic ?1- are compared with the powers of the MRPP test statistic ?2(the two-sided Wilcoxon-Mann-Whitney test) for large samples from several underlying populations. Powers are obtained using two approximate distributions of ?1 involving three and four moments respectively, The use of the fourth moment indicates that an approximation to the null distribution of ? based on four moments can perform better |
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| Keywords: | MRPP tests multiresponse permutation procedure Wilcoxon-Mann-Whitney test simulated power heavy-tailed distributions Pearson curves |
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