Poisson Distribution - an overview | ScienceDirect Topics
Frank H. Stephenson, in Calculations for Molecular Biology and Biotechnology (Second Edition), 2010. 3.12.1 The Poisson distribution. The Poisson distribution is used to describe the distribution of rare events in a large population. For example, at any particular time, there is a certain probability that a particular cell within a large population of cells will acquire a mutation.