

   TThhee BBooxx--CCooxx DDiissttrriibbuuttiioonn

        dboxcox(y, m, s, f)
        pboxcox(q, m, s, f)
        hboxcox(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 power parameters.

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

        These functions provide information about the Box-Cox
        distribution with location parameter equal to `m', dis-
        persion equal to `s', and power transformation equal to
        `f'.  `dboxcox' gives the density, `pboxcox' gives the
        distribution function  `hboxcox' gives the hazard func-
        tion.

        The Box-Cox distribution has density

        f(y) = 1/sqrt(2 pi s^2) exp(-((y^f/f - mu)^2/(2 s^2)))/
        (1-I(f<0)-sign(f)*pnorm(0,m,sqrt(s)))

        where m is the location parameter of the distribution,
        s is the dispersion, f is the family parameter, I() is
        the indicator function, and y>0.

        f=1 gives a truncated normal distribution.

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

        J.K. Lindsey

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

        `dnorm' for the normal or Gaussian distribution.

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

        dboxcox(2, 5, 5, 2)
        pboxcox(2, 5, 5, 2)

