fcdf - F cumulative distribution function
Syntax
P = fcdf(X,V1,V2)
Description
P = fcdf(X,V1,V2) computes
the F cdf at each of the values in X using
the corresponding numerator degrees of freedom V1 and
denominator degrees of freedom V2. X, V1,
and V2 can be vectors, matrices, or multidimensional
arrays that are all the same size. A scalar input is expanded to a
constant matrix with the same dimensions as the other inputs. The
parameters in V1 and V2 must
be positive integers.
The F cdf is
The result, p, is the probability that
a single observation from an F distribution with
parameters ν1 and ν2 will
fall in the interval [0 x].
Examples
The following illustrates a useful mathematical identity for
the F distribution:
nu1 = 1:5;
nu2 = 6:10;
x = 2:6;
F1 = fcdf(x,nu1,nu2)
F1 =
0.7930 0.8854 0.9481 0.9788 0.9919
F2 = 1 - fcdf(1./x,nu2,nu1)
F2 =
0.7930 0.8854 0.9481 0.9788 0.9919
See Also
cdf, fpdf, finv, fstat, frnd
F Distribution
 | FBoot property (TreeBagger) | | ff2n |  |
Includes the most popular MATLAB recorded presentations with Q&A sessions led by MATLAB experts.
Get the Interactive Kit
Store 
