Here are a couple of good free online sites that I have found to help study for statistics. Sample Questions Statistics Class Notes
I'd also recommend William Trochim's Research Methods Knowledge Base for basic research methods and introductory statistics. In addition to this free Web site, which is pretty extensive in its own right, you can purchase a newer online version or printed version with companion CD from Atomic Dog Publishing Jason D. Baker http://www.bakersguide.com
Graduate-Level Stats Those are very good sites. I'm in stats now and can verify that it's hard stuff.
