Talk:Displaced Poisson distribution
WikiProject Statistics  (Rated Stubclass, Lowimportance)  


I tried to implement the equation for the pmf in order to plot it. However, I wonder if the pmf equation is entirely correct. If r can take real values, then the meaning of the factorial expression is not welldefined.
I checked the original paper, where exactly the same equation is stated. It is not stated explicitly in the paper that r can be realvalued, but it is stated that s is the integral part of r. So I suppose that r can be noninteger.
Is there an error in the original paper, or is my understanding of r wrong?
Kind regards Troels Pedersen