3x3 Contingency Table Exact Test Formula

Below you will find descriptions and details for the formula that is used to compute exact test probabilities (p-values) for 3x3 contingency tables.

3x3 contingency table hypergeometric probability value:

Variable definitions:
a, b, c, d, e, f, g, h, and i = the number of observations in each cell
n = total sample size

= a binomial coefficient