stats_dens_f
(PECL stats >= 1.0.0)
stats_dens_f — Probability density function of the F distribution
説明
Returns the probability density at x, where the
random variable follows the F distribution of which the degree of freedoms
are dfr1 and dfr2.
パラメータ
x-
The value at which the probability density is calculated
dfr1-
The degree of freedom of the distribution
dfr2-
The degree of freedom of the distribution
戻り値
The probability density at x or false for failure.
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