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Statistics, Nonparametric

A class of statistical methods applicable to a large set of probability distributions used to test for correlation, location, independence, etc. In most nonparametric statistical tests, the original scores or observations are replaced by another variable containing less information. An important class of nonparametric tests employs the ordinal properties of the data. Another class of tests uses information about whether an observation is above or below some fixed value such as the median, and a third class is based on the frequency of the occurrence of runs in the data. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed, p1284; Corsini, Concise Encyclopedia of Psychology, 1987, p764-5)

Year introduced: 1995

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Tree Number(s): E05.318.740.995, N05.715.360.750.760, N06.850.520.830.995

MeSH Unique ID: D018709

Entry Terms:

  • Non-Parametric Statistics
  • Non Parametric Statistics
  • Nonparametric Statistics
  • Statistics, Non-Parametric
  • Statistics, Non Parametric
  • Kruskal-Wallis H Statistic
  • Mann-Whitney U Test
  • Mann Whitney U Test
  • Test, Mann-Whitney U
  • U Test, Mann-Whitney
  • Rank-Sum Tests
  • Rank-Sum Test
  • Rank Sum Tests
  • Test, Rank-Sum
  • Tests, Rank-Sum
  • Kolmogorov-Smirnov Test
  • Kolmogorov Smirnov Test
  • Test, Kolmogorov-Smirnov
  • Wilcox Test
  • Test, Wilcox
  • Wilcoxon Rank Test
  • Rank Test, Wilcoxon
  • Test, Wilcoxon Rank
  • Spearman Rank Correlation Coefficient

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