# Fisher exact test

Fisher exact test
Fish·er exact test (fishґər) [Sir Ronald Aylmer Fisher, British statistician, 1890â€“1962] see under test.

Medical dictionary. 2011.

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• Fisher exact test — a statistical hypothesis test of independence of rows and columns in a 2 Ð§ 2 contingency table based on the exact sampling distribution of the observed frequencies, useful when any expected value in the table is small …   Medical dictionary

• Fisher's exact test — is a statistical significance test used in the analysis of categorical data where sample sizes are small. It is named after its inventor, R. A. Fisher, and is one of a class of exact tests. Fisher devised the test following a comment from Muriel… …   Wikipedia

• Exact test — In statistics, an exact (significance) test is a test where all assumptions upon which the derivation of the distribution of the test statistic is based are met, as opposed to an approximate test, in which the approximation may be made as close… …   Wikipedia

• Fisher’s exact test — A statistical test of independence much used in medical research. It tests the independence of rows and columns in a 2 X 2 contingency table (with 2 horizontal rows crossing 2 vertical columns creating 4 places for data) based on the exact… …   Medical dictionary

• Exact statistics — Exact statistics, such as that described in exact test, is a branch of statistics that was developed to provide more accurate results pertaining to statistical testing and interval estimation by eliminating procedures based on asymptotic and… …   Wikipedia

• Test, Fisher’s exact — A statistical test of independence much used in medical research. It tests the independence of rows and columns in a 2 X 2 contingency table (with 2 horizontal rows crossing 2 vertical columns creating 4 places for data) based on the exact… …   Medical dictionary

• test — 1. To prove; to try a substance; to determine the chemical nature of a substance by means of reagents. 2. A method of examination, as to determine the presence or absence of a definite disease or of some substance in any of the fluids, tissues,… …   Medical dictionary

• Fisher's noncentral hypergeometric distribution — Probability mass function for Fisher s noncentral hypergeometric distribution for different values of the odds ratio ω. m 1 = 80, m 2 = 60, n = 100, ω = 0.01, ..., 1000In probability theory and statistics, Fisher s noncentral hypergeometric… …   Wikipedia

• Test de Khi-2 — Test du χ²  Pour la loi de probabilité, voir Loi du χ². Densité du χ² en fonction du nombre de degrés de liberté Le test du χ² (prononcer …   Wikipédia en Français

• Test du Chi-2 — Test du χ²  Pour la loi de probabilité, voir Loi du χ². Densité du χ² en fonction du nombre de degrés de liberté Le test du χ² (prononcer …   Wikipédia en Français