You are here: Symbol Reference > Dew Namespace > Dew.Math Namespace > Dew.Math.Units Namespace > Classes > Probabilities Class > Probabilities Methods > FCDF Method > Probabilities.FCDF Method (double, int, int)
Dew Math for .NET
ContentsIndexHome
PreviousUpNext
Probabilities.FCDF Method (double, int, int)
Probabilities Class  Probabilities Members  Dew.Math.Units Namespace  FCDF Method  See Also
Collapse All

F cumulative distribution function (CDF).

Syntax
C#
Visual Basic
public static double FCDF(double x, int Nu1, int Nu2);
Parameters
Parameters 
Description 
double x 
Distribution domain, real positive value or zero. 
int Nu1 
Defines distribution degrees of freedom. Nu1 must be a positive integer. 
int Nu2 
Defines distribution degrees of freedom. Nu2 must be a positive integer. 
Returns

the F cumulative distribution function (CDF) for integer parameters Nu1 and Nu2 at the value X. Both Nu1 and Nu2 must be positive integer numbers, otherwise the result is NAN.

Remarks

The F cumulative distribution function is defined by the following equation: 

 

where n1=Nu1 and n2=Nu2 are degrees of freedom, and Gamma is the Math387.Gamma function. The result of FCDF is the probability that a single observation from an F distribution with parameters Nu1 and Nu2 will fall in the interval [0,x].

See Also
Group
Links
Copyright (c) 1999-2024 by Dew Research. All rights reserved.
Contents | Index | Home
What do you think about this topic? Send feedback!