Re: Chi-Square Test and Counting Statistics

[Darren Boone <booned@ucs.orst.edu>]

The comment was made that with a reasonably large number of counts, the
Poisson distribution approximates a normal distribution.  I'm not sure
that this true.  In the reference, Mathematical Statistics with
Applications, Wackerly, Mendenhall and Scheaffer, fifth edition, it states
that a binomial distribution with large "counts" approximates a Poisson
distribution.  Given this I believe that the chi-squared test does
actually represent a Poisson.

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