单词	F‐distribution
释义	F‐distribution A non‐negative continuous distribution formed from the ratio of the distributions of two independent random variables with chi‐squared distributions, each divided by its degrees of freedom. The mean is and the variance is , where ν1 and ν2 are the degrees of freedom of the numerator and denominator respectively. It is used to test the hypothesis that two normally distributed random variables have the same variance and in regression to test the relationship between an explanatory variable and the dependent variable. The distribution is skewed to the right.
随便看	prime element prime ideal prime knot prime meridian prime number theorem prime subfield primitive primitive primitive element primitive polynomial primitive root Prim's algorithm principal axes principal axes principal ideal principal ideal domain principal moments of inertia principal part principal value principal value integral principle of conservation of energy principle of conservation of linear momentum principle of mathematical induction principle of moments principle of the excluded middle

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