The Power of Student's t and Wilcoxon W Statistics

Jeffrey Lee Rasmussen
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Jeffrey Lee Rasmussen: Indiana University-Purdue University at Indianapolis

Evaluation Review, 1985, vol. 9, issue 4, 505-510

Abstract: A previous study indicated that the Wilcoxon W test showed a power advantage over the student's t-test when they were calculated on samples drawn from a common mixed-normal distribution. The present study investigates the effect of correcting for outliers in the mixed-normal samples. The results indicate that the t-test corrected for outliers shows a superior power curve to the Wilcoxon W.

Date: 1985
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Persistent link: https://EconPapers.repec.org/RePEc:sae:evarev:v:9:y:1985:i:4:p:505-510

DOI: 10.1177/0193841X8500900407

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