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Contents
Table of Contents
Preface
Index of Applications
Introduction to Data
Case Study—Deadly Cell Phones?
1.1 What Are Data?
1.2 Classifying and Storing Data
1.3 Organizing Categorical Data
1.4 Collecting Data to Understand Causality
Data Project-How Are Data Stored?
Picturing Variation with Graphs
Case Study—Student-to-Teacher Ratio at Colleges
2.1 Visualizing Variation in Numerical Data
2.2 Summarizing Important Features of a Numerical Distribution
2.3 Visualizing Variation in Categorical Variables
2.4 Summarizing Categorical Distributions
2.5 Interpreting Graphs
Data Project-Asking Questions
Numerical Summaries of Center and Variation
Case Study—Living in a Risky World
3.1 Summaries for Symmetric Distributions
3.2 What's Unusual? The Empirical Rule and z-Scores
3.3 Summaries for Skewed Distributions
3.4 Comparing Measures of Center
3.5 Using Boxplots for Displaying Summaries
Data Project-The Statistical Investigation Cycle
Regression Analysis: Exploring Associations between Variables
Case Study—Forecasting Home Prices
4.1 Visualizing Variability with a Scatterplot
4.2 Measuring Strength of Association with Correlation
4.3 Modeling Linear Trends
4.4 Evaluating the Linear Model
Data Project-Data Moves
Modeling Variation with Probability
Case Study—SIDS or Murder?
5.1 What Is Randomness?
5.2 Finding Theoretical Probabilities
5.3 Associations in Categorical Variables
5.4 Finding Empirical Probabilities
Data Project-Submitting Data
Modeling Random Events: The Normal and Binomial Models
Case Study—You Sometimes Get More Than You Pay For
6.1 Probability Distributions Are Models of Random Experiments
6.2 The Normal Model
6.3 The Binomial Model (optional)
Data Project-Generating Random Numbers
Survey Sampling and Inference
Case Study—Spring Break Fever: Just What the Doctors Ordered?
7.1 Learning about the World through Surveys
7.2 Measuring the Quality of a Survey
7.3 The Central Limit Theorem for Sample Proportions
7.4 Estimating the Population Proportion with Confidence Intervals
7.5 Comparing Two Population Proportions with Confidence
Data Project-Population Proportions
Hypothesis Testing for Population Proportions
Case Study—Dodging the Question
8.1 The Essential Ingredients of Hypothesis Testing
8.2 Hypothesis Testing in Four Steps
8.3 Hypothesis Tests in Detail
8.4 Comparing Proportions from Two Populations
Data Project-Dates as Data
Inferring Population Means
Case Study—You Look Sick! Are You Sick?
9.1 Sample Means of Random Samples
9.2 The Central Limit Theorem for Sample Means
9.3 Answering Questions about the Mean of a Population
9.4 Hypothesis Testing for Means
9.5 Comparing Two Population Means
9.6 Overview of Analyzing Means
Data Project-Data Structures
Analyzing Categorical Variables and Interpreting Research
Case Study—Popping Better Popcorn
10.1 The Basic Ingredients for Testing with Categorical Variables
10.2 Chi-Square Tests for Associations between Categorical Variables
10.3 Reading Research Papers
Data Project-Think Small
Appendix A Tables Appendix B Check Your Tech Answers Appendix C Credits Index
