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| Ακριβής δοκιμή του Fisher× | Έλεγχος Q του Cochran× | |
|---|---|---|
| Πεδίο | Στατιστική | Στατιστική |
| Οικογένεια | Hypothesis test | Hypothesis test |
| Έτος προέλευσης≠ | 1922 | 1950 |
| Δημιουργός≠ | R. A. Fisher | William G. Cochran |
| Τύπος≠ | Exact test of independence for categorical data | Nonparametric proportions comparison |
| Θεμελιώδης πηγή≠ | Fisher, 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 ↗ |
| Εναλλακτικές ονομασίες | Fisher-Irwin test, exact test of independence, Fisher'ın Kesin Testi | Cochran Q Testi, Cochran's Q, Q test for related proportions |
| Συναφείς≠ | 2 | 4 |
| Σύνοψη≠ | Fisher'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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