(PECL stats >= 1.0.0)
stats_cdf_f — Calculates any one parameter of the F distribution given values for the others
Returns the cumulative distribution function, its inverse, or one of its parameters, of the F 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, d1, and d2 denotes cumulative distribution function, the value of the random variable, and the degree of freedoms of the F distribution, respectively.
which | Return value | par1 | par2 | par3 |
---|---|---|---|---|
1 | CDF | x | d1 | d2 |
2 | x | CDF | d1 | d2 |
3 | d1 | x | CDF | d2 |
4 | d2 | x | CDF | d1 |
par1
The first parameter
par2
The second parameter
par3
The third parameter
which
The flag to determine what to be calculated
Returns CDF, x, d1, or d2, determined by which
.