stats_cdf_beta
(PECL stats >= 1.0.0)
stats_cdf_beta — Calculates any one parameter of the beta distribution given values for the others.
Description
float stats_cdf_beta ( float $par1 , float $par2 , float $par3 , int $which ) Returns the cumulative distribution function, its inverse, or one of its parameters, of the beta 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, alpha, and beta denotes cumurative distribution function, the value of the random variable, and shape parameters of the beta distribution, respectively.
which | Return value | par1 | par2 | par3 |
|---|---|---|---|---|
1 | CDF | x | alpha | beta |
2 | x | CDF | alpha | beta |
3 | alpha | x | CDF | beta |
4 | beta | x | CDF | alpha |
Parameters
par1
The first parameter
par2
The second parameter
par3
The third parameter
which
The flag to determine what to be calculated
Return Values
Returns CDF, x, alpha, or beta, determined by which.
← stats_absolute_deviation
stats_cdf_binomial →
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