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F_Dist

LabWindows/CVI

F_Dist

Advanced Analysis Library Only

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

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 Code

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 The point from which the probability is computed.

Range: –∞ < f < ∞
nDegreesOfFreedom int The first degree of freedom for the F-distribution.
mDegreesOfFreedom int The second degree of freedom for the F-distribution.
Output
Name Type Description
probabilityOfF double 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.

Additional Information

Library: Advanced Analysis Library

Include file: analysis.h

LabWindows/CVI compatibility: LabWindows/CVI 3.1 and later