MathematicsCode 9709
The Poisson distribution
What this topic asks you to be able to do
- apply formulae to find the probabilities of outcomes under Po(λ)
- apply the result that when X ~ Po(λ), both the mean and the variance of X equal λ
- appreciate how random events are linked to the Poisson distribution, and employ that distribution as a model
- use a Poisson distribution as an approximation for a binomial distribution in cases where this is appropriate
- apply a normal distribution, together with a continuity correction, as an approximation for a Poisson distribution in suitable cases