estimating rho of Poisson distributed data
On Jan 15, 2010, at 9:46 AM, Titus von der Malsburg wrote:
On Fri, Jan 15, 2010 at 09:19:23AM -0500, David Winsemius wrote:
On Jan 15, 2010, at 5:59 AM, Titus von der Malsburg wrote:
Mean and variance of Poisson distributed data are specified by \rho. How can I estimate \rho for a set of measurements in R?
rho <- mean(x)
Yeah, thanks :-)
Hey, ask a simple question, get a simple answer.
I was looking for a general way to fit a distribution. Should've made that clear. I'm surprised that nobody is complaining because I called lambda rho!
There is a fitdistr function in MASS which would be extreme overkill for the problem posed and: http://cran.r-project.org/doc/contrib/Ricci-distributions-en.pdf What other trivial searching can I do for you?
David Winsemius, MD Heritage Laboratories West Hartford, CT