PHP 7.2.0 Beta 3 Released

# stats_cdf_binomial

(PECL stats >= 1.0.0)

stats_cdf_binomialCalculates any one parameter of the binomial distribution given values for the others.

### Descrição

float stats_cdf_binomial ( float `\$par1` , float `\$par2` , float `\$par3` , int `\$which` )

Returns the cumulative distribution function, its inverse, or one of its parameters, of the binomial 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, n, and p denotes cumurative distribution function, the number of successes, the number of trials, and the success rate for each trial, respectively.

Return value and parameters
`which` Return value `par1` `par2` `par3`
1 CDF x n p
2 x CDF n p
3 n x CDF p
4 p x CDF n

### Parâmetros

`par1`

The first parameter

`par2`

The second parameter

`par3`

The third parameter

`which`

The flag to determine what to be calculated

Returns CDF, x, n, or p, determined by `which`.
``` Calculates any one parameter of the binomial     distribution given values for the others.                              Arguments     WHICH --> Integer indicating which of the next four argument               values is to be calculated from the others.               Legal range: 1..4               iwhich = 1 : Calculate P and Q from S,XN,PR and OMPR               iwhich = 2 : Calculate S from P,Q,XN,PR and OMPR               iwhich = 3 : Calculate XN from P,Q,S,PR and OMPR               iwhich = 4 : Calculate PR and OMPR from P,Q,S and XN     P <--> The cumulation from 0 to S of the binomial distribution.            (Probablility of S or fewer successes in XN trials each            with probability of success PR.)            Input range: [0,1].     Q <--> 1-P.            Input range: [0, 1].            P + Q = 1.0.     S <--> The number of successes observed.            Input range: [0, XN]            Search range: [0, XN]     XN  <--> The number of binomial trials.              Input range: (0, +infinity).              Search range: [1E-100, 1E100]     PR  <--> The probability of success in each binomial trial.              Input range: [0,1].              Search range: [0,1]     OMPR  <--> 1-PR              Input range: [0,1].              Search range: [0,1]              PR + OMPR = 1.0     STATUS <-- 0 if calculation completed correctly               -I if input parameter number I is out of range                1 if answer appears to be lower than lowest                  search bound                2 if answer appears to be higher than greatest                  search bound                3 if P + Q .ne. 1                4 if PR + OMPR .ne. 1     BOUND <-- Undefined if STATUS is 0               Bound exceeded by parameter number I if STATUS               is negative.               Lower search bound if STATUS is 1.               Upper search bound if STATUS is 2. ```