how do you model counts what kind of data are in the doctor visits subset? how do you skew an individual's counts? how to model counts in msa can you model msa count how to model numbers using a poisson distribution how to model the count of doctor office visits in cross validation can msa model a count how to find the amount of observations for each subset in cross validated data set age subsets how to model counts in msa how to use poisson distribution to model msa how many observations do the msa have? what is the difference between gender and age what is poisson distribution and why should it be used for counts cross validated se how to model the count how to model msa in se how to model count subsets can we model counts from small observations how to model count of visits for each subset