Improved Significance Probabilities of the Wilcoxon Test

J. L. Hodges, Philip H. Ramsey and Sergio Wechsler

Journal of Educational and Behavioral Statistics, 1990, vol. 15, issue 3, 249-265

Abstract: An Edgeworth approximation for accurate significance probabilities for the Wilcoxon two-sample test is substantially simplified. A method is developed that allows quick and easy calculations of very accurate probabilities. Exact formulas are given for most of the remaining cases, and tables are presented comparing the accuracy of the new simplification relative to the most likely alternatives.

Keywords: Mann-Whitney U test; exact probabilities (search for similar items in EconPapers)
Date: 1990
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Persistent link: https://EconPapers.repec.org/RePEc:sae:jedbes:v:15:y:1990:i:3:p:249-265

DOI: 10.3102/10769986015003249

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