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stats_dens_gamma

(PECL stats >= 1.0.0)

stats_dens_gammaProbability density function of the gamma distribution

説明

stats_dens_gamma(float $x, float $shape, float $scale): float

Returns the probability density at x, where the random variable follows the gamma distribution of which the shape parameter is shape and the scale parameter is scale.

パラメータ

x

The value at which the probability density is calculated

shape

The shape parameter of the distribution

scale

The scale parameter of the distribution

戻り値

The probability density at x or false for failure.

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