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- _T_h_e _F _D_i_s_t_r_i_b_u_t_i_o_n
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- df(x, n1, n2)
- pf(q, n1, n2)
- qf(p, n1, n2)
- rf(n, n1, n2)
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- _V_a_l_u_e:
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- These functions provide information about the F distri-
- bution 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
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- for x > 0.
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-