R: Contingency tables

From MathWiki

R tools for the analysis of contingency tables

chisq.test
Test equal p's if x is vector, independence if a matrix, = to given p. Can simulate p-value.
prop.test
prop.test can be used for testing the null that the proportions (probabilities of success) in several groups are the same, or that they equal certain given values.
prop.test(x, n, p = NULL,
        alternative = c("two.sided", "less", "greater"),
        conf.level = 0.95, correct = TRUE)