Date: Thu, 26 Mar 1998 11:25:50 +0100 Message-Id: <199803261025.LAA00738@sophie.ethz.ch> From: Martin Maechler <maechler@stat.math.ethz.ch> To: wsimpson@uwinnipeg.ca Subject: Re: R-beta: qpois help >>>>> "Bill" == Bill Simpson <wsimpson@uwinnipeg.ca> writes: Bill> The Poisson Distribution Bill> dpois(x, lambda) .... Bill> Arguments: ... Bill> lambda: vector of positive means. Bill> Isn't lambda = 1/mean? No! (maybe you are confusing with the exponential distribution, where what S/R calls "rate" is often also written as \lambda in the text books). PS. You could have tried mean(rpois(1000, lambda = 10)) -.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.- r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html Send "info", "help", or "[un]subscribe" (in the "body", not the subject !) To: r-help-request@stat.math.ethz.ch _._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._._