# Difference between revisions of "Eleisha's Segment 33: Contingency Tables Protocols and Exact Fisher Test"

To Calculate

1. How many distinct m by n contingency tables are there that have exactly N total events?

There are mxn cells within the table. You are choosing from N events to distribute between the distinct cells. Therefore there are $\displaystyle {m\times n \choose N }$ distinct tables.

2. For every distinct 2 by 2 contingency table containing exactly 14 elements, compute its chi-square statistic, and also its Wald statistic. Display your results as a scatter plot of one statistic versus the other.