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stats_cdf_logistic

(PECL stats >= 1.0.0)

stats_cdf_logisticCalculates any one parameter of the logistic distribution given values for the others.

Description

float stats_cdf_logistic ( float $par1 , float $par2 , float $par3 , int $which )

Returns the cumulative distribution function, its inverse, or one of its parameters, of the logistic 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, mu, and s denotes cumurative distribution function, the value of the random variable, and the location and the scale parameter of the logistic distribution, respectively.

Return value and parameters
which Return value par1 par2 par3
1 CDF x mu s
2 x CDF mu s
3 mu x CDF s
4 s x CDF mu

Parameters

par1

The first parameter

par2

The second parameter

par3

The third parameter

which

The flag to determine what to be calculated

Return Values

Returns CDF, x, mu, or s, determined by which.

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