قارن الطرق

	تصميم القطاعات العشوائية الكاملة (RCBD)	اختبار فريدمان
المجال	التصميم التجريبي	الإحصاء
العائلة	Hypothesis test	Hypothesis test
سنة النشأة	1935	1937
صاحب الطريقة	Ronald A. Fisher	Milton Friedman
النوع	Parametric blocked ANOVA	Nonparametric repeated-measures comparison (by ranks)
المصدر التأسيسي	Montgomery, D.C. (2017). Design and Analysis of Experiments (9th ed.). Wiley. ISBN: 978-1-119-32093-7	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.
الأسماء البديلة	RCBD, randomized block design, complete block design, Tesadüf Bloklu Desen (RCBD)	Friedman two-way analysis of variance by ranks, Friedman rank test, Friedman Testi
ذات صلة	6	2
الملخص	The Randomized Complete Block Design (RCBD) is a parametric experimental design and hypothesis-testing framework that isolates and removes a known source of heterogeneity — called a block — before comparing treatment means. Introduced by Ronald A. Fisher in his 1935 monograph The Design of Experiments, it remains the foundational blocked design in agricultural, clinical, and industrial research.	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.