ConFoo 2025

stats_cdf_chisquare

(PECL stats >= 1.0.0)

stats_cdf_chisquareCalculates any one parameter of the chi-square distribution given values for the others

Descrição

stats_cdf_chisquare(float $par1, float $par2, int $which): float

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

The following table lists the return value and parameters by which. CDF, x, and k denotes cumulative distribution function, the value of the random variable, and the degree of freedom of the chi-square distribution, respectively.

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

Parâmetros

par1

The first parameter

par2

The second parameter

which

The flag to determine what to be calculated

Valor Retornado

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

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