I am doing a chi-squared test to compare two treatment groups for any baseline differences eg gender, ethnicity etc. Most of these are 2x2 but ethnicity has at least 5 categories.
In several instances, the assumptions are not met, i.e. cells have counts smaller than 5 in them.
Therefore which test would I use rather than a chi-squared? Please remember that some of the tables are 2x3 or even 2x5.