Expected value of the Geometric distribution
- To: mathgroup at smc.vnet.net
- Subject: [mg118453] Expected value of the Geometric distribution
- From: "Tonja Krueger" <tonja.krueger at web.de>
- Date: Thu, 28 Apr 2011 06:37:38 -0400 (EDT)
Hi all, I want to calculate expected value of diverse distributions like the Geometric distribution (for example). As I understand this, the expected value is the integral of the density function *x. But when I try to calculate this: Integrate[(1-p)^k*p*k,k] I get this as the answer: ((1 - p)^k p (-1 + k Log[1 - p]))/Log[1 - p]^2 Instead of: (1-p)/p. I would be so grateful if someone could explain to me what I'm doing wrong. Tonja ___________________________________________________________ Empfehlen Sie WEB.DE DSL Ihren Freunden und Bekannten und wir belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.web.de