Free Fisher Exact Test Calculator
Calculate Fisher exact test for 2x2 contingency tables.
Odds Ratio
9.3333
Total N20
Row 1 Total10
Row 2 Total10
Odds Ratio vs Cell a (R1,C1)
Fisher Exact Test
Computes exact probability for 2x2 tables. Preferred over chi-square for small samples.
Example Calculation
2x2: a=8, b=2, c=3, d=7.
- 01OR = 56/6 = 9.33
- 02N=20
Frequently Asked Questions
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