stats_rand_gen_f
Generates a random deviate from the F distribution
説明
float stats_rand_gen_f(float $dfn, float $dfd)
Generates a random deviate from the F (variance ratio) distribution with
"dfn" degrees of freedom in the numerator and "dfd" degrees of freedom in
the denominator. Method : directly generates ratio of chisquare variates.
パラメータ
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dfn
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The degrees of freedom in the numerator
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dfd
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The degrees of freedom in the denominator