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stats_cdf_exponential

(PECL stats >= 1.0.0)

stats_cdf_exponentialCalculates any one parameter of the exponential distribution given values for the others.

Beschreibung

float stats_cdf_exponential ( float $par1 , float $par2 , int $which )

Returns the cumulative distribution function, its inverse, or one of its parameters, of the exponential 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 lambda denotes cumurative distribution function, the value of the random variable, and the rate parameter of the exponential distribution, respectively.

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

Parameter-Liste

par1

The first parameter

par2

The second parameter

which

The flag to determine what to be calculated

R├╝ckgabewerte

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

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