Here is my table > tt A B 1 297 398 2 470 376 3 30 23 4 3 3 5 0 0
b/c two cells are zero, I can't use chisq.test() in R which gives the following output; > chisq.test(tt) Pearson's Chi-squared test data: tt X-squared = NaN, df = 4, p-value = NA Warning message: Chi-squared approximation may be incorrect in: chisq.test(tt) What function should I use then? Any suggestion? [[alternative HTML version deleted]] ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.