stats_cdf_negative_binomial

Calculates any one parameter of the negative binomial distribution given values for the others

説明

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 cumulative distribution function, the number of failure, the number of success, and the success rate for each trial, respectively.

Return value and parameters
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

パラメータ

par1

The first parameter

par2

The second parameter

par3

The third parameter

which

The flag to determine what to be calculated

戻り値

Returns CDF, x, r, or p, determined by which.