Input and return values of stats_cdf_t depends on the $which-parameter:
<?php
function get_t_p($t, $df){
return stats_cdf_t($t, $df, 1);
}
function get_t_t($p, $df){
return stats_cdf_t($p, $df, 2);
}
function get_t_df($p, $t){
return stats_cdf_t($p, $t, 3);
}
?>
stats_cdf_f
(PECL stats >= 1.0.0)
stats_cdf_f — Calculates any one parameter of the F distribution given values for the others
Descrierea
stats_cdf_f
( float
$par1
, float $par2
, float $par3
, int $which
) : float
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 |
Parametri
-
par1 -
The first parameter
-
par2 -
The second parameter
-
par3 -
The third parameter
-
which -
The flag to determine what to be calculated
Valorile întoarse
Returns CDF, x, d1, or d2, determined by which.
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User Contributed Notes 1 note
brjann (theat) gmail (thedot) com ¶
17 years ago
