stats_cdf_chisquare
(PECL stats >= 1.0.0)
stats_cdf_chisquare — Calculates any one parameter of the chi-square distribution given values for the others
说明
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 cumurative distribution function, the value of the random variable, and the degree of freedom of the chi-square distribution, respectively.
which |
Return value | par1 |
par2 |
|---|---|---|---|
| 1 | CDF | x | k |
| 2 | x | CDF | k |
| 3 | k | x | CDF |
参数
-
par1 -
The first parameter
-
par2 -
The second parameter
-
which -
The flag to determine what to be calculated
返回值
Returns CDF, x, or k, determined by which.
