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)

Descriptor ID	D018709
MeSH Number(s)	E05.318.740.995 N05.715.360.750.760 N06.850.520.830.995
Concept/Terms	Statistics, Nonparametric Statistics, Nonparametric Nonparametric Statistics Statistics, Non-Parametric Statistics, Non Parametric Non-Parametric Statistics Non Parametric Statistics Kruskal-Wallis H Statistic Kruskal-Wallis H Statistic Wilcoxon Rank Test Wilcoxon Rank Test Rank Test, Wilcoxon Test, Wilcoxon Rank Rank-Sum Tests Rank-Sum Tests Rank Sum Tests Rank-Sum Test Test, Rank-Sum Tests, Rank-Sum Spearman Rank Correlation Coefficient Spearman Rank Correlation Coefficient Wilcox Test Wilcox Test Test, Wilcox Kolmogorov-Smirnov Test Kolmogorov-Smirnov Test Kolmogorov Smirnov Test Test, Kolmogorov-Smirnov Mann-Whitney U Test Mann-Whitney U Test Mann Whitney U Test Test, Mann-Whitney U U Test, Mann-Whitney

Below are MeSH descriptors whose meaning is more general than "Statistics, Nonparametric".

Below are MeSH descriptors whose meaning is related to "Statistics, Nonparametric".

Below are MeSH descriptors whose meaning is more specific than "Statistics, Nonparametric".