stats_cdf_t
(PECL stats >= 1.0.0)
stats_cdf_t — Calculates any one parameter of the t-distribution given values for the others
说明
stats_cdf_t
( float
$par1
, float $par2
, int $which
) : float
Returns the cumulative distribution function, its inverse, or one of its parameters,
of the t-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 nu denotes cumurative distribution function, the value of the random
variable, and the degrees of freedom of the t-distribution, respectively.
which |
Return value | par1 |
par2 |
|---|---|---|---|
| 1 | CDF | x | nu |
| 2 | x | CDF | nu |
| 3 | nu | 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 nu, determined by which.