1. This form of conditioning is also the basis for Fisher's exact test . 2. The critical thing here is that you very rarely need an exact test . 3. An important theoretical contribution was his 1935 paper on " Fisher's exact test ". 4. Tseng's software for matching has similarly been used in nonparametric statistics to implement exact tests . 5. Using an exact test , this is calculated as 6. Assuming you sampled without replacement, you'd need to use the hypergeometric distribution to do an exact test . 7. Both tests have sizes less than or equal to the uniformly more powerful than Fisher's exact test . 8. You should ideally use an exact test instead, or a simpler method like the Wilson score test. 9. An example of the Fisher Exact Test used on a 2 ?3 matrix is provided here. 10. As is typical for Fisher's exact test for small samples, the gradation of significance levels is quite coarse.
