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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 x^(n/2-1)(x⁢n+m)^(-(n+m)/2) for x>0, and is zero for x<0. »
  • For integer n and m, the F-ratio distribution gives the distribution of the ratio of variances for samples from normal distributions.
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