Previous Page | Next Page

Functions and CALL Routines

PROBF Function



Returns the probability from an F distribution.
Category: Probability
See: CDF Function

Syntax
Arguments
Details
Examples
See Also

Syntax

PROBF(x,ndf,ddf<,nc>)


Arguments

x

is a numeric random variable.

Range: x [ge] 0
ndf

is a numeric numerator degrees of freedom parameter.

Range: ndf > 0
ddf

is a numeric denominator degrees of freedom parameter.

Range: ddf > 0
nc

is an optional numeric noncentrality parameter.

Range: nc [ge] 0

Details

The PROBF function returns the probability that an observation from an F distribution, with numerator degrees of freedom ndf, denominator degrees of freedom ddf, and noncentrality parameter nc, is less than or equal to x. The PROBF function accepts noninteger degrees of freedom parameters ndf and ddf. If the optional parameter nc is not specified or has the value 0, the value returned is from the central F distribution.

The significance level for an F test statistic is given by

p=1-probf(x,ndf,ddf);


Examples

SAS Statements Results
x=probf(3.32,2,3);
0.8263933602


See Also

Functions:

CDF Function

LOGCDF Function

LOGPDF Function

LOGSDF Function

PDF Function

SDF Function

Previous Page | Next Page | Top of Page