Normal Approximation to Poisson Summary

Normal Approximation to Poisson

Summary
 
the normal distribution can be used to approximate to the poisson distribution when λ is large, best when λ > 20.
 

the mean and standard deviation of the normal approximation are λ and √ λ respectively.

 
 

Key Skills

 solve problems involving poisson probability by approximating to the normal distribution.

Vocabulary

poisson distribution, normal distribution, continuity correction, parameter, mean, standard deviation.