Poisson.pdf()

statsmodels.discrete.discrete_model.Poisson.pdf

Poisson.pdf(X) [source]

Poisson model probability mass function

Parameters:	X : array-like X is the linear predictor of the model. See notes.
Returns:	pdf : ndarray The value of the Poisson probability mass function, PMF, for each point of X.

Notes

The PMF is defined as

where assumes the loglinear model. I.e.,

The parameter X is in the above formula.