search for: betaff

Hi, I need to fit my data with beta-prim distribution. I found the function in the package VGAM: betaprime and betaff. I don't know how can I make it work. I know that i need to calculate the parameters that describe this function on my distribution. But for exemple I don't understand the "link function. And then How can I plot my data fitted? Can you help me out with this? Thanks a lot! Alessandra...

...or the beta distribution (though I’ve been unsuccessful in being able to unpack the source code tar.gz file from CRAN in Windows to see this): precis.param<- predict(test.model,newdata=GasolineYield[20,],type="precision") #This is from the description of the beta distribution in ?VGAM::betaff: var2<-predicted.value*(1-predicted.value)/(1+precis.param) var1==var2 ...but I’m not sure what can be done with this value. One can’t simply take the sq rt to get a “standard error” (of sorts), can they? I don’t think, for example, this is taking much account of the uncertainty in the regressio...

...gories Probabilities benini Benini Distribution Family Function betaII Beta Distribution of the Second Kind betabin.ab Beta-binomial Distribution Family Function betabinomial Beta-binomial Distribution Family Function betaff The 2-parameter Beta Distribution Family Function betageometric Beta-geometric Distribution Family Function betaprime The Beta-Prime Distribution bilogistic4 Bivariate Logistic Distribution Family Function binom2.or Bivariate Logist...