stats_cdf_negative_binomial
stats_cdf_negative_binomial
(PECL stats >= 1.0.0)
stats_cdf_negative_binomial — Calculates any one parameter of the negative binomial distribution given values for the others.
Description
float stats_cdf_negative_binomial ( float $par1 , float $par2 , float $par3 , int $which )
Returns the cumulative distribution function, its inverse, or one of its parameters, of the negative binomial 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, r, and p denotes cumurative distribution function, the number of failure, the number of success, and the success rate for each trial, respectively.
| which | Return value | par1 | par2 | par3 |
|---|---|---|---|---|
| 1 | CDF | x | r | p |
| 2 | x | CDF | r | p |
| 3 | r | x | CDF | p |
| 4 | p | x | CDF | r |
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, r, or p, determined by which.
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stats_cdf_noncentral_chisquare →
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https://secure.php.net/manual/en/function.stats-cdf-negative-binomial.php
