| 释义 |
F distribution
F distribution n (Statistics) statistics a continuous distribution obtained from the ratio of two chi-square distributions and used esp to test the equality of the variances of two normally distributed variances F 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. f distribution
f dis·tri·bu·tionthe distribution of the ratio of two independent quantities each of which is distributed like a variance in normally distributed samples. So named in honor of the English statistician and geneticist R.A. Fisher. |