As the catalog of resources on the Internet grows, the opportunities for learning expand, as do the difficulty of evaluating Websites. THE INTERNET COMPANION FOR STATISTICS, Second Edition, provides educators and students with an organized, clear, and reliable interface to the Internet. An excellent accompaniment to a main text, this book includes numerous examples and exercises that refer to motivating online material related directly to specific topics covered in the introductory statistics course. Helpful exercises include numerical, short answer, and expository problems related to the appropriate Websites as listed in the book. On the accompanying Book Companion Website, you will find regularly updated links, as well as additional resources for quickly and effectively integrating the Internet into your Introductory Statistics course. Access to the website is also available using the Student's Suite CD-ROMs that accompany many of our bestselling introductory statistics titles.

### Table of Contents

Preface.

Purpose of Book.

How to Use the Book.

Outline of Book and Online Material.

1. MEASUREMENTS ON ONE QUANTITATIVE VARIABLE.

Center. Spread. Transformations. Examples.

2. MEASUREMENTS ON TWO QUANTITATIVE VARIABLES.

Scatterplots. Correlation. Regression. Transformations.

3. CATEGORICAL DATA.

One Variable on Two or More Groups. Two or More Variables. Simpson's Paradox.

4. RESEARCH DESIGNS.

Experiments. Surveys, Including Opinion Polls. Observational Studies. Examples.

5. PROBABILITY.

Sets and Long Run Relative Frequency. Probability Rules. Conditional Probability and Bayes' Theorem. Birthday Problem. Monte Hall Problem. Card Problems.

6. RANDOM VARIABLES AND PROBABILITY DISTRIBUTIONS.

Binomial, Geometric, Poisson, Normal and Other Random Variables.

7. SAMPLING DISTRIBUTIONS.

General Sampling Distributions. Law of Large Numbers. Central Limit Theorem.

8. CONFIDENCE INTERVALS.

Inference for a Single Mean. Inference Concerning Two Means. Inference for a Single Proportion. Inference Concerning Two Proportions.

9. HYPOTHESIS TESTING.

Inference for a Single Mean. Inference Concerning Two Means. Inference for a Single Proportion. Inference Concerning Two Proportions. Inference Concerning Tables of Counts.

10. CORRELATION AND REGRESSION.

Inference for correlation and regression coefficients.

11. ANALYSIS OF VARIANCE.

One-way and two-way ANOVA.

12. NONPARAMETRIC STATISTICS.

Sign tests and rank-based tests.

13. CASE STUDIES.

14. INDEXES, WEBSITES, AND COURSE OUTLINES.