A nonparametric comparison of two small samples with many ties

James S. Uleman

Research output: Contribution to journalArticlepeer-review


Describes an exact nonparametric test suitable for testing whether 1 sample is stochastically larger than another. The advantage of the test over currently available forms of the Mann-Whitney U test is that it can handle small samples with numerous ties. Comparisons with the Mann-Whitney and normal approximations to it are presented. The use of the statistic is illustrated with data drawn from current research literature. (PsycINFO Database Record (c) 2006 APA, all rights reserved).

Original languageEnglish (US)
Pages (from-to)794-797
Number of pages4
JournalPsychological bulletin
Issue number6 PART 1
StatePublished - Dec 1968


  • nonparametric comparison of 2 small samples with many shared variables

ASJC Scopus subject areas

  • General Psychology


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