Chi-squared and Fisher's exact test

Uzay and I have fielded several questions about the Chi-squared test and Fisher's exact test. If you're not familiar with the tests or if you just need a refresher, take a look at the Wikipedia page on contingency tables, and follow the links to Peason's chi-squared test and Fisher's exact test for mor information on how they're calculated.

I've also posted some notes giving instructions (HTML, PDF) on how to do the tests in R. If you're unsure about any of this please try to take a look at the Wikipedia entries and the notes I've posted before Wednesday and ask a question about what you don't understand before we get started.

On a different note. If you've looked at the lecture schedule, you can see that we're running a little behind. I'll be rearranging the lecture schedule a bit later this weekend, so stay tuned.