Dear all,
I would like to do a goodness-of-fit test on my data to see if they follow a mixture of 2 poisson distributions. I have small numbers for observed values. Most of them <5. The chisq.test  gives warning message: Chi-squared approximation may be incorrect in: chisq.test(x , p = prob). However, the option sim=TURE would suppress the warning message. Does that mean with the option sim=TURE, the result from chisq.test is valid, even though most of the cell counts <5?

Thank you very much!

Sincerely,

Jian



       
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