F-distribution

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The F-distribution is used in classical statistics for hypothesis testing involving the comparison of variances between two samples (ANOVA = ANalysis Of VAriance), or for testing whether one model (such as a regression fit) is statistically superior to another.

Functions

FDist(dof1, dof2)

New to Analytica 5.2

The distribution function.

DensFDist(x, dof1, dof2)

The Analytic density function. Returns the probability density at «x» of an F-distribution with «dof1» and «dof2» degrees of freedom.

CumFDist(x, dof1, dof2)

The cumulative density at «x» for the F-distribution with degrees of freedom «dof1» and «dof2». This is the area under the probability density graph falling to the left of «x».

CumFDistInv(p, dof1, dof2)

The inverse cumulative density function (quantile function) of a F-distribution with «dof1» and «dof2» degrees of freedom. Returns the p^th fractile/quantile/percentile.