search for: binomail

Dear R users, I’m performing some GLMMs analysis with a negative binomial link. I already performed such analysis some months ago with the lmer() function but when I tried it today I encountered this problem: *Erreur dans famType(glmFit$family) : unknown GLM family: ‘Negative Binomial’* Does anyone know if the negative binomial family has been removed from this function? I really appreciate any

I am trying to find a definition for the two-tailed exact binomial test but have been unsuccessful. Can you help? --------------------------------- [[alternative HTML version deleted]]

Dear all, I would like to model the relationship between y and x. y is binary variable, and x is a count variable which may be possion-distribution. I think it is better to divide x into intervals and change it to a factor before calling glm(y~x,data=dat,family=binomail). I try to use rpart. As y is binary, I use "class" method and get the following result. > rpart(y~x,data=dat,method="class") n=778 (22 observations deleted due to missingness) node), split, n, loss, yval, (yprob) * denotes terminal node 1) root 778 67 0 (0.91388175...

...command for this, that will help, I have > the R package SuppDists installed, I am just not sure how to use it for > this distribution. > > thanks, > Nasser > I thought I should show what I did, this is R 2.6.1: tghyper(a=-1, k=-1, N=5) %I think this makes it do Beta Negative Binomail and now I used summary command, right? sghyper(3, .5, 3) But I do not think this is correct.Tried few other permitations. Hard for me to see how to set the parameters correctly for this distribution. thanks, Nasser

Hello, Anyone who knows a fast and accurate algorithm for generating draws from an underdispersed Poisson distribution. Or even better, if there is a package containing such an implementation. Thanks Rene