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
.