AS/A2 Stats 1 Stats 3

S2 Topic 3: Continuous distributions
Normal approximation to the Poisson distribution 2
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Summary Cumulative Poisson probabilities are available in table form for values of l in the range 0.5 to 10. For larger values of l an approximation has to be used. The Normal distribution provides a good approximation to the Poisson distribution for l > 10. This page uses HotEqn.