Evaluating correlations between dichotomous/binary variables? What test? I have 4 variables, each are dichotomous, 1 = in this group &amp; 0 = not in this group (for each of the 4 groups).
I have read mixed accounts of whether Pearson's correlation can be use used for binary variables. If not, what is a good alternative?
Would the Cramer V test work with a twoway-chi 2?
You want to be using a chisq test instead of looking at correlation. Correlation isn't well defined for categorical variables, since it relies on variance and covariance, which doesn't really make intuitive sense in the categorical (binary) case