مقایسهٔ روش‌ها

	آزمون مقایسات چندگانه دان	آزمون فریدمن
حوزه	آمار	آمار
خانواده	Hypothesis test	Hypothesis test
سال پیدایش	1964	1937
پدیدآور	Olive Jean Dunn	Milton Friedman
نوع	Nonparametric pairwise comparison	Nonparametric repeated-measures comparison (by ranks)
منبع بنیادین	Dunn, O.J. (1964). Multiple Comparisons Using Rank Sums. Technometrics, 6(3), 241–252.	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.
نام‌های دیگر	Dunn's post-hoc test, Kruskal-Wallis post-hoc, Dunn Testi — Kruskal-Wallis Post-Hoc	Friedman two-way analysis of variance by ranks, Friedman rank test, Friedman Testi
مرتبط	5	2
خلاصه	Dunn's test is a nonparametric post-hoc procedure introduced by Olive Jean Dunn in 1964 to identify which specific pairs of groups differ significantly after a Kruskal-Wallis test has returned a significant overall result. It compares groups pairwise using rank sums and applies a multiple-comparison correction — most commonly Bonferroni or Holm — to control the family-wise error rate.	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.