Erlang Distribution

Author

Eric W. Weisstein
March 22, 2006

This notebook downloaded from http://mathworld.wolfram.com/notebooks/Statistics/ErlangDistribution.nb.

For more information, see Eric's MathWorld entry http://mathworld.wolfram.com/ErlangDistribution.html.

©2006 Wolfram Research, Inc. except for portions noted otherwise

CDF

d=FullSimplify[1-Exp[-λ x] Sum[(λ x)^k/k!,{k,0,h-1}]]

d /. h->1

PDF

p=FullSimplify[D[d,x]]

p /. h->1