Benefit: Students can concentrate on ideas rather than software syntax; they learn to translate easily from problem-solving procedures to on-screen commands.

• CD-ROM with data sets formatted for popular computing tools as well as supplemental worked examples and exercises.

Benefit: Students save time and avoid mistakes by downloading data rather than entering it at the keyboard. Extra problem-solving practice increases their chances of success in the course.

• More examples and exercises based on actual data.

Benefit: Students are motivated by seeing application of statistics to the real world, as they learn to work with "messy" numbers (rather than data contrived for easy computation).

• Statistics Today problems open every chapter. These real-life problems, accompanied by a photo or graphic and sometimes a news item, show students the relevance of the chapter's topic. The answer is provided at chapter end.

Benefit: Students apply concepts and procedures to real-world situations, increasing interest and comprehension.

• Procedure Tables embody the book's step by step approach. These boxes summarize methods for solving various types of common problems. Worked examples include EVERY step.

Benefit: Since they can refer to the Procedure Tables, students are never "at sea" while working exercises. Through practice, the procedures become second nature.

• Critical Thinking Challenges at the end of each chapter extend chapter concepts into new areas, inviting students to think about and apply what they have learned.

Benefit: By considering broader implications of basic statistical concepts, students deepen their understanding.