Poisson Approximation to the Binomial | |
Summary |
when the value of n in a binomial distribution is large and the value of p is very small, the binomial distribution can be approximated by a poisson distribution. if n > 20 and np < 5 or nq < 5 then the poisson is a good approximation. |
Key Skills |
solve problems involving binomial probability by approximating to the poisson distribution. |
Vocabulary |
poisson distribution, binomial distribution, parameter, mean,standard deviation. |