Focus on Statistical Inference. The main theme of this text is statistical inference and decision making through the interpretation of numerical results. The process of statistical inference is introduced in a variety of applications and statistical settings all using a similar, carefully delineated, four-step approach: Claim, Experiment, Likelihood, and Conclusion.

Step-by-Step Solutions. The solutions to selected examples are presented in logical, systematic steps.  This approach helps guide the reader through the necessary calculations in order to find a solution and interpret results.

Solution Explanations. Each part in a solution is explained, or justified, so that the reader can easily follow each step in a solution.

A Closer Look.  The details provided in these sections offer straightforward explanations of various definitions and concepts. The itemized specifics, including hints, tips, and reminders, make it easier for the reader to interpret, comprehend, and learn important statistical ideas.

How To Boxes.  This feature provides clear steps for constructing basic graphs or performing essential calculations.  The title in a How To box is color coded and easy to locate with each chapter.

Definition/Formula Boxes.  Definitions and formulas are clearly marked and outlined with clean, crisp color-coded lines.

Data Sets.  All data sets presented in the examples and exercises are available on the text’s website (www.macmillanlearning.com/introstats3e) in various formats.  This makes it easy for students and instructors to use the most familiar and comfortable technology.

Grouped Exercises.  There is a wide variety of interesting, engaging exercises on relevant topics, based on current data, at the end of each section.  These problems provide plenty of opportunity for practice, review, and application of concepts.  Exercises are grouped according to:
Concept Check: True/False, Fill in the Blank, and Short Answer exercises designed to reinforce the basic concepts presented in the section.
Practice: Basic, introductory problems to familiarize students with the relevant applications and solution methods.
Applications: Realistic, appealing exercises to build confidence and promote routine understanding.
Extended Applications: Applied problems that require extra creativity and thought.
Challenge: Additional exercises and technology projects that allow students to
discover more advanced concepts and connections.
At the end of each chapter, Chapter Exercises help to test the student's overall understanding of the chapter’s concepts and to practice for assessments. Answers to odd-numbered section and chapter exercises are given at the back of the book.

Chapter Summary.  A table at the end of each chapter provides a short summary and page reference for each key concept, relevant notation, and formula.

Theory Symbols.  In only a few places in the text, more advanced material is offset with blue, half-moon symbols. This material can be skipped by the typical reader, but provides more complete explanations of various topics.