

Hjorth(rmutil)                               R Documentation

_T_h_e _H_j_o_r_t_h _D_i_s_t_r_i_b_u_t_i_o_n

_D_e_s_c_r_i_p_t_i_o_n_:

     These functions provide information about the Hjorth
     distribution with location parameter equal to `m', dis-
     persion equal to `s', and family parameter equal to
     `f'.  `dhjorth' gives the density, `phjorth' gives the
     distribution function, `hhjorth' gives the hazard func-
     tion.

     The Hjorth distribution has density

          f(y) = (1+s y)^(-f/s) exp(-(y/m)^2/2) (y/m^2+f/(1+s y))

     where m is the location parameter of the distribution,
     s is the dispersion, and f is the family parameter.

_U_s_a_g_e_:

     dhjorth(y, m, s, f)
     phjorth(q, m, s, f)
     hhjorth(y, m, s, f)

_A_r_g_u_m_e_n_t_s_:

       y: vector of responses.

       q: vector of quantiles.

       m: vector of location parameters.

       s: vector of dispersion parameters.

       f: vector of family parameters.

_A_u_t_h_o_r_(_s_)_:

     J.K. Lindsey

_E_x_a_m_p_l_e_s_:

     dhjorth(5, 5, 5, 2)
     phjorth(5, 5, 5, 2)

