

   TThhee NNoorrmmaall DDiissttrriibbuuttiioonn

        dnorm(x, mean=0, sd=1)
        pnorm(q, mean=0, sd=1)
        qnorm(p, mean=0, sd=1)
        rnorm(n, mean=0, sd=1)

   AArrgguummeennttss::

        x,q: vector of quantiles.

          p: vector of probabilites.

          n: number of observations.

       mean: vector of means.

         sd: vector of standard deviations.

   DDeessccrriippttiioonn::

        These functions provide information about the normal
        distribution with mean equal to `mean' and standard
        deviation equal to `sd'.  `dnorm' gives the density,
        `pnorm' gives the distribution function `qnorm' gives
        the quantile function and `rnorm' generates random
        deviates.

        If `mean' or `sd' are not specified they assume the
        default values of `0' and `1', respectively.

        The normal distribution has density

        f(x) = 1/(sqrt(2 pi) sigma) e^-((x - mu)^2/(2 sigma^2))

        where mu is the mean of the distribution and sigma the
        standard deviation.

   SSeeee AAllssoo::

        `runif' and `.Random.seed' about random number genera-
        tion, and `dlnorm' for the Lognormal distribution.

   EExxaammpplleess::

        dnorm(0) == 1/ sqrt(2*pi)
        dnorm(1) == exp(-1/2)/ sqrt(2*pi)
        dnorm(1) == 1/ sqrt(2*pi*exp(1))

