cumulative distribution function (cdf) cummulative distributions percent point function (ppf) cummulative distributions percent point function (ppf) cummulative distributions percent point function (ppf) cumulative distribution function (cdf) cumulative distribution function (cdf) cummulative distributions percent point function (ppf) percent point function (ppf) cummulative distributions percent point function (ppf) cumulative distribution function (cdf) cumulative distribution function (cdf) cumulative distribution function (cdf) cumulative distribution function (cdf) percent point function (ppf) percent point function (ppf) percent point function (ppf) cumulative distribution function (cdf) cumulative distribution function (cdf) percent point function (ppf) cumulative distribution function (cdf) cummulative distributions 1.3.6.2. Related Distributions percent point function