F_Dist

Advanced Analysis Library Only

AnalysisLibErrType F_Dist (double f, int nDegreesOfFreedom, int mDegreesOfFreedom, double *probabilityF);

Purpose

Calculates the one-sided probability:

p = prob(F f)

where F is a random variable from the F-distribution with the specified degrees of freedom

Example

double x, p;
int n, m;
x = -123.456;
n = 6;
m = 7;
F_Dist (x, n, m, &p);
/* Now p = 0 because F-distributed variables are non-negative. */

Parameters

Input
Name Type Description
f double-precision The point from which the probability is computed.

Range: –∞ < f < ∞
nDegreesOfFreedom integer The first degree of freedom for the F-distribution.
mDegreesOfFreedom integer The second degree of freedom for the F-distribution.
Output
Name Type Description
probabilityF double-precision Calculated probability (0 p < 1).

Return Value

Name Type Description
status AnalysisLibErrType A value that specifies the type of error that occurred. Refer to analysis.h for definitions of these constants.