

   TThhee GGeenneerraalliizzeedd WWeeiibbuullll DDiissttrriibbuuttiioonn

        dgweibull(y, m, s, f)
        pgweibull(q, m, s, f)
        hgweibull(y, m, s, f)

   AArrgguummeennttss::

          y: vector of responses.

          q: vector of quantiles.

          m: vector of location parameters.

          s: vector of dispersion parameters.

          f: vector of family parameters.

   DDeessccrriippttiioonn::

        These functions provide information about the general-
        ized Weibull distribution with location parameter equal
        to `m', dispersion equal to `s', and family parameter
        equal to `f'.  `dgweibull' gives the density,
        `pgweibull' gives the distribution function,
        `hgweibull' gives the hazard function.

        The generalized Weibull distribution has density

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

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

        f=infinity gives a Weibull distribution, for s=1, f<0 a
        generalized F distribution, and for s>0, f<0 a Burr
        type XII distribution.

   AAuutthhoorr((ss))::

        J.K. Lindsey

   SSeeee AAllssoo::

        `dweibull' for the Weibull distribution, `df' for the F
        distribution, `dburr' for the Burr distribution.

   EExxaammpplleess::

        dgweibull(5, 1, 3, 2)
        pgweibull(5, 1, 3, 2)

