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stats_cdf_gamma

(PECL stats >= 1.0.0)

stats_cdf_gammaCalculates any one parameter of the gamma distribution given values for the others

Descripción

stats_cdf_gamma(
    float $par1,
    float $par2,
    float $par3,
    int $which
): float

Returns the cumulative distribution function, its inverse, or one of its parameters, of the gamma distribution. The kind of the return value and parameters (par1, par2, and par3) are determined by which.

The following table lists the return value and parameters by which. CDF, x, k, and theta denotes cumulative distribution function, the value of the random variable, and the shape and the scale parameter of the gamma distribution, respectively.

Return value and parameters
which Return value par1 par2 par3
1 CDF x k theta
2 x CDF k theta
3 k x CDF theta
4 theta x CDF k

Parámetros

par1

The first parameter

par2

The second parameter

par3

The third parameter

which

The flag to determine what to be calculated

Valores devueltos

Returns CDF, x, k, or theta, determined by which.

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