CliffsNotes Quick Review guides give you a clear, concise, easy-to-use review of the basics. Introducing each topic, defining key terms, and carefully walking you through sample problems, this guide helps you grasp and understand the important concepts needed to succeed. Inside the Book: Graphic displays; Numerical measures; Probability; Sampling; Principles of testing; Univariate inferential tests; Bivariate relationships; Review questions; Resource center; Glossary; Common mistakes; Tables