In our study of disease occurrence,this unit is taken as a subdistrict of a province during a calendar year. The Poisson distribution arises from observations that are assumed to be statistically independent. It has mean λ and variance λ.
In our study of disease occurrence,this unit is taken as a subdistrict of a province during a calendaryear. The Poisson distribution arises from observations that are assumed to be statistically independent. It has mean λ and variance λ.