Fisher exact test


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Fish·er ex·act test

(fish'ĕr),
the test for association in a two-by-two table that is based on the exact distribution of the frequencies within the table.

Fish·er ex·act test

(fish'ĕr eg-zakt' test)
Statistical significance assessment that uses a two-by-two table that is based on the exact distribution of the frequencies within the table.

Fisher exact test

[R. A. Fisher, Brit. mathematician, 1890–1962]
A test used to determine the statistical significance of findings generated from small sets of data.

Fisher,

Ronald A., English statistician, 1890-1962.
Fisher exact test - a statistical hypothesis test.
References in periodicals archive ?
Nevertheless, when the beef liver and chicken liver treatments were combined for a 1-tailed test of the proposition that more colonies stopped producing brood when fed liver than when fed crickets, the results were still significant (2 x 2 Fisher exact test, P = 0.
68) RA: Rheumatoid arthritis; DAS28: Disease activity score in 28 joints; OR: Odds ratio; CI: Confidence interval; AIF1: Allograft inflammatory factor-1; * Chi-square test; ** Fisher exact test for alleles.
The Fisher exact test was conducted by using IBM SPSS Statistics, version 19.
However, when data for the two marshes (Northeast and Northwest) where nesting Marsh Wrens were present were combined, a significant effect was observed (Table 1; Fisher exact test, P = 0.
Interval data were compared between groups (with/without colonoscopy and with/without SCI) using a two-tailed Student's t-test (BMI, high-density lipoprotein [HDL]) or a Wilcoxon-Mann-Whitney test (age, age at injury onset, years since injury, total cholesterol, low-density lipoprotein, and triglycerides) according to normality of distribution; categorical data were compared using chi-square or Fisher Exact test when appropriate.
Data were analyzed using SPSS and using tests such as Student's T test, Chi Square, Fisher exact test, and McNemar.
The differences of allele frequencies between the two tails were examined by Fisher exact test, using SAS 8.
We also compared volumes of foods in the crops between the months using a Fisher Exact Test (Sokal 1969).
328 Fisher exact test Notes: The null hypothesis is Ho: there is no difference in behavior between the two data sets.
The Fisher exact test was used, and both point and exact 95 percent confidence values were determined for the odds ratio.
For each option, a Fisher Exact test was employed to determine if there was a relationship between the level of teaching (lower or upper) and choice of assessment approach.