Exact tests based on the Baumgartner-Weiß-Schindler statistic—A survey |
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Authors: | Markus Neuhäuser |
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Institution: | (1) Institute for Medical Informatics, Biometry and Epidemiology, University Hospital Essen, Hufelandstr. 5, 45122 Essen, Germany |
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Abstract: | It is the purpose of this paper to review recently-proposed exact tests based on the Baumgartner-Weiß-Schindler statistic and its modification. Except for the generalized Behrens-Fisher problem, these tests are broadly applicable, and they can be used to compare two groups irrespective of whether or not ties occur. In addition, a nonparametric trend test and a trend test for binomial proportions are possible. These exact tests are preferable to commonly-applied tests, such as the Wilcoxon rank sum test, in terms of both type I error rate and power. |
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Keywords: | Cochran-Armitage test conditional test conservatism Jonckheere-Terpstra test Kolmogorov-Smirnov test nonparametrics ties Wilcoxon rank sum test |
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