The F Distribution

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The F Distribution

Syntax

df(x, n1, n2)
pf(q, n1, n2)
qf(p, n1, n2)
rf(n, n1, n2)

Value

These functions provide information about the F distribution with n1 and n2 degrees of freedom. df gives the density, pf gives the distribution function qf gives the quantile function and rf generates random deviates.

The F distribution with n_1 and n_2 degrees of freedom has density

f(x) = Gamma((n1 + n2)/2) / (Gamma(n1/2) Gamma(n2/2)) (n1/n2)^(n1/2) x^(n1/2 - 1) (1 + (n1/n2) x)^-(n1 + n2)/2

((Equations will(?) come with HTML 3.x ))

for x > 0.