InverseFDistribution Command

InverseFDistribution( <Numerator Degrees of Freedom>, <Denominator Degrees of Freedom>, <Probability> ): Computes the inverse of the cumulative distribution function of an F-distribution at probability p, where the F-distribution is defined by the given degrees of freedom. In other words, it finds t such that P(X ≤ t) = p, where X is a random variable with an F-distribution. Probability p must be a value in the closed interval [0,1].