PPOISS(3M)

NAME
ppoiss

DESCRIPTION
function ppoiss.f source
  Bevington, page 39. purpose
  evaluate Poisson probability function usage
  result = ppoiss (nobs, averag) description of parameters
  nobs - number of items observed
  averag - mean of distribution subroutines and function subprograms required
  factor (n)
    calculates n factorial for integers