Better, this new skewedness element is managed by the a great gamma shipment with a properly higher shape parameter (which can also be estimated). You will find never ever used it, regardless if I know a GLM according to it’s been observed within the Roentgen.
My preference in such cases even if, as i said a lot more than, was several – stage acting, with the zeros modeled having an excellent logistic regression, as well as the masters which have a good GLM (alternatively, simply log-alter the benefits and you can run a beneficial linear regression on them). (więcej…)