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# Appendix B. Review of Arithmetic and Algebra

The authors understand and realize that there are wide differences in the mathematical background of readers of this book. Some of you may have taken various courses in calculus and matrix algebra, whereas others may not have taken any mathematics courses in a long period of time. Because the emphasis of this book is on statistical concepts and the interpretation of Microsoft Excel and statistical calculator output, no prerequisite beyond elementary algebra is needed. To assess your arithmetic and algebraic skills, you may want to answer the following questions and then read the review that follows.

# Assessment Quiz

## Part 1

Fill in the correct answer.

 1 2 (0.4)2 = 3 4 5 6 1 – (–0.3) = 7 4 × 0.2 × (–8) = 8

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