Good Book for Brushing up on Statistics
Business Statistics 4th ed by Leonard J. Kazmier.NY: McGraw Hill (Schaum's Outlines Series).
Other Recommended Reading
Innumeracy: Mathematical Illiteracy and Its Consequences by John Allen Paulos, Farrar, Straus, and Giroux, 2001. Freakonomics: A Rogue Economist Explores the Hidden Side of Everything by Steven D. Levitt and Stephen J. Dubner, Morrow, 2005. SuperFreakonomics: Global Cooling, Patriotic Prostitutes, and Why Suicide Bombers Should Buy Life Insuranceby Steven Levitt and Stephen Dubner HarperCollins Publishers, 2009. The Research Methods Knowledge Base by William M. K. Trochim, Atomic Dog Publishing, Cincinnati, OH, 2001. This has some very good explanations of statistical concepts. There are newer, much more expensive, editions.