New Features:

1. The division between the z and t distributions is handled differently in Chapter 9. The rule of thumb based on sample sizes (n greater than 30) to distinguish when to use either z or t is replaced by the more exact rule of using the z distribution when the standard deviation is known and the t distribution when it is is unknown.
2. Modified and reorganized Chapters 1 through 4 to set apart more clearly the procedures for each level of measurement
3. The multiple regression treatment in Chapter 14 also includes an investigation of the theory behind the linear model along with tests for the violation of each assumption.
4. The ANOVA chapter has been expanded to include interaction.
5. Revised and expanded exercises are included in all chapters.
6. Additional detail in the software sections has been added where appropriate.
7. Available with Homework Manager and Homework Manager Plus.
8. Available as Zinio E-book.