F mean and variance
[M,V] = fstat(V1,V2)
[M,V] = fstat(V1,V2) returns the mean of and
variance for the F distribution with numerator degrees of freedom
V1 and denominator degrees of freedom
V2 can be vectors, matrices, or
multidimensional arrays that all have the same size, which is also the size of
V. A scalar input for
V2 is expanded to a constant arrays
with the same dimensions as the other input.
V2 parameters must contain real positive values.
The mean of the F distribution for values of ν2 greater than 2 is
The variance of the F distribution for values of ν2 greater than 4 is
The mean of the F distribution is undefined if ν2 is less than 3. The variance is undefined for ν2 less than 5.
the mean and variance are undefined.
[m,v] = fstat(1:5,1:5) m = NaN NaN 3.0000 2.0000 1.6667 v = NaN NaN NaN NaN 8.8889