
 Functions and CALL Routines : PDF 
  The PDF function for the chisquared distribution returns the probability density function of a chisquared distribution, with df degrees of freedom and noncentrality parameter nc, which is evaluated at the value x. 
  The PDF function for the F distribution returns the probability density function of an F distribution, with ndf numerator degrees of freedom, ddf denominator degrees of freedom, and noncentrality parameter nc, which is evaluated at the value x. 
  The PDF function for the geometric distribution returns the probability density function of a geometric distribution, with parameter p, which is evaluated at the value m. 
 www.asu.edu /it/fyi/unix/helpdocs/statistics/sas/sasdoc/sashtml/lgref/z0270634.htm (1051 words) 
