Functions and CALL Routines |
Returns the probability from an F distribution.
-
x
-
is a numeric random variable.
Range: |
x 0 |
-
ndf
-
is a numeric numerator degrees of freedom
parameter.
-
ddf
-
is a numeric denominator degrees of freedom
parameter.
-
nc
-
is an optional numeric noncentrality parameter.
Range: |
nc 0 |
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);
SAS Statements |
Results |
x=probf(3.32,2,3);
|
0.8263933602
|
Copyright © 2011 by SAS Institute Inc., Cary, NC, USA. All rights reserved.