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	Test post-hoc di Conover-Iman	Test di Friedman
Campo	Statistica	Statistica
Famiglia	Regression model	Hypothesis test
Anno di origine	1979	1937
Ideatore	Conover & Iman	Milton Friedman
Tipo	Nonparametric post-hoc multiple comparison	Nonparametric repeated-measures comparison (by ranks)
Fonte seminale	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.
Alias	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
Correlati	3	2
Sintesi	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.