

   TThhee LLooggiissttiicc DDiissttrriibbuuttiioonn

        dlogis(x, location, scale=1)
        plogis(q, location, scale=1)
        qlogis(p, location, scale=1)
        rlogis(n, location, scale=1)

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

        These functions provide information about the logistic
        distribution with parameters `location' and `scale'.
        `dlogis' gives the density, `plogis' gives the distri-
        bution function `qlogis' gives the quantile function
        and `rlogis' generates random deviates.

        The Logistic distribution with `location' a and `scale'
        b has density

                f(x) =
                1/b exp((x-a)/b) (1 + exp((x-a)/b))^-2.

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

        x <- 0:4
        paste(dlogis(x, loc = 0)) == paste(exp(x) * (1 + exp(x))^-2)

