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This calculator performs computes multiple measures of correlation for a 2 X 2 experiment. The odds ratio is determined and the Pearson and Fisher exact tests are performed.

Input

Totals
Totals

Output

Odds Ratio

r = ± 1σ error bar, and
< ln r < with 95% confidence.

Pearson χ2 Test

χ2 =
P(χ2' < χ2) = , P(χ2' ≥ χ2) =

Fisher Exact Test

Fischer exact tests are performed for N ≤ 200.

Operations on 2 X 2 and N X M contingency tables are part of the functionality of the Meta.Numerics.Statistics library.