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آزمون دقیق فیشر×آزمون Q کوکران×
حوزهآمارآمار
خانوادهHypothesis testHypothesis test
سال پیدایش19221950
پدیدآورR. A. FisherWilliam G. Cochran
نوعExact test of independence for categorical dataNonparametric proportions comparison
منبع بنیادینFisher, R. A. (1922). On the interpretation of chi-squared from contingency tables, and the calculation of P. Journal of the Royal Statistical Society, 85(1), 87–94. DOI ↗Cochran, W. G. (1950). The comparison of percentages in matched samples. Biometrika, 37(3–4), 256–266. DOI ↗
نام‌های دیگرFisher-Irwin test, exact test of independence, Fisher'ın Kesin TestiCochran Q Testi, Cochran's Q, Q test for related proportions
مرتبط24
خلاصهFisher's exact test is a nonparametric exact-probability test of independence for small-sample contingency tables, introduced by R. A. Fisher in 1922. Rather than relying on a large-sample approximation, it computes the exact probability of the observed table directly from the hypergeometric distribution.Cochran's Q test is a nonparametric hypothesis test introduced by William G. Cochran in 1950 for comparing proportions across three or more related binary measurements. It extends McNemar's test to the multiple-condition case and is the method of choice when every participant is observed under each condition and the outcome is recorded as a simple success/failure (1/0).
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ScholarGateمقایسهٔ روش‌ها: Fisher's exact test · Cochran Q Test. بازیابی‌شده در 2026-06-18 از https://scholargate.app/fa/compare