I have a question about conducting independence tests for categorical data with Fisher's Exact when I have zeros in my data. Since I observed no data for a category in both groups, is it right to include zero? Is this the best I can do with some empty categories?
Take the following R code for instance which represents my two groups of 7 categories:
v1 <- c(31, 9, 6, 0, 5, 0 27) v2 <- c(13, 0, 1, 0, 1, 2, 7) v <- cbind(v1, v2) fisher.test(v) p-value = 0.08061