Includes index.

Preface -- Preliminaries: Introduction to statistical investigations. Introduction to the six-step method section ; Exploring data ; Exploring random processes -- Unit 1: Four pillars of inference : strength, size, breadth, and cause. Significance : how strong is the evidence? ; Generalization : how broadly do the results apply? ; Estimation : how large is the effect? ; Causation : can we say what caused the effect? -- Unit 2: Comparing two groups. Comparing two proportions ; Comparing two means ; Paired data : one quantitative variable -- Unit 3: Analyzing more general situations. Comparing more than two proportions ; Comparing more than two means ; Two quantitative variables -- Appendix: Calculation details -- Appendix: Stratified and cluster samples -- Answers: Answered to starred homework problems.