StatTools : Compare Two Counts : Program

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Related link :
Poisson Distribution and Procedures Explained Page
Sample Sizae for Comparing Two Counts, Explanations, Calculations, and Tables Page

Program References
Data Entry

The data is a table with 4 columns separated by spaces or tabs.

  • Col 1 is the count in group 1 (k1)
  • Col 2 is the count in group 2 (k2)
  • Col 3 is the sample size in group 1 (n1)
  • Col 4 is the sample size in group 2 (n2)
Please Note : The E Test is calculated using iteration where the limit of difference is set to 1e-10. If the log(ratio) of the two counts are too small the iteration value will become less than this limit and the calculation will fail and abort.