FRatioDistribution

FRatioDistribution[n, m]
represents an F-ratio distribution with n numerator and m denominator degrees of freedom.

The probability density for value x in an F-ratio distribution is proportional to for , and is zero for . »

For integer n and m, the F-ratio distribution gives the distribution of the ratio of variances for samples from normal distributions.

FRatioDistribution can be used with such functions as Mean, CDF and RandomReal. »

The mean and variance of an F-ratio distribution:

The probability density function is related to the beta function:

(2)