F distribution

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Related to F-distribution: T-distribution

F distribution

[′ef ‚dis·trə‚byü·shən]
(statistics)
The ratio of two independent chi-square variables each divided by its degree of freedom; used to test hypotheses in the analysis of variance and hypotheses about whether or not two normal populations have the same variance.
References in periodicals archive ?
i~ and all other candidates' offers are drawn independently from the F-distribution.
Candidate i would gain by deviating from the F-distribution to some other distribution G (when all other candidates are expected to use the F-distribution) if the deviation would cause candidate i's average approval score to become higher than the other candidates' average approval scores.
If the hypothesis that the four industries have the same elasticities is true, then the traditional test statistic involved has F-distribution with degrees of freedom 6 and 50.
3]) for their indirect forms (8) is true, then the appropriate test statistic has F-distribution with degrees of freedom 6 and 30, respectively.
In particular, Abramowitz and Stegun [1] reproduced the tables of percentiles of chi-square, t-, and F-distributions from the 1954 edition of Pearson and Hartley [2].