手法を比較

	Conover-Iman の事後検定	Friedman test
分野	統計学	統計学
系統	Regression model	Hypothesis test
提唱年	1979	1937
提唱者	Conover & Iman	Milton Friedman
種類	Nonparametric post-hoc multiple comparison	Nonparametric repeated-measures comparison (by ranks)
原典	Conover, W. J. & Iman, R. L. (1979). On Multiple-Comparisons Procedures. Technical Report LA-7677-MS, Los Alamos Scientific Laboratory.	Friedman, M. (1937). The use of ranks to avoid the assumption of normality implicit in the analysis of variance. Journal of the American Statistical Association, 32(200), 675–701.
別名	Conover-Iman post-hoc test, Conover post-hoc test, Conover-Iman Post-Hoc Testi	Friedman two-way analysis of variance by ranks, Friedman rank test, Friedman Testi
関連	3	2
概要	The Conover-Iman test is a rank-based post-hoc procedure, introduced by Conover and Iman in 1979, that identifies which pairs of groups differ after a significant Kruskal-Wallis or Friedman test. It builds a t-style statistic on the pooled ranks and is generally more powerful than the comparable Dunn test.	The Friedman test is a nonparametric hypothesis test that compares three or more related conditions measured on the same blocks or subjects, serving as the rank-based alternative to repeated-measures ANOVA. It was introduced by Milton Friedman in 1937 and works on ordinal or continuous data without assuming normality.