Quantitative Analysis for Management, 13/e

Self-Test

• Before taking the self-test, refer to the learning objectives at the beginning of the chapter, the notes in the margins, and the glossary at the end of the chapter.

• Use the key at the back of the book (see Appendix H) to correct your answers.

• Restudy pages that correspond to any questions that you answered incorrectly or material you feel uncertain about.

1. One of the assumptions in regression analysis is that

   1. the errors have a mean of 1.

   2. the errors have a mean of 0.

   3. the observations (Y) have a mean of 1.

   4. the observations (Y) have a mean of 0.

2. A graph of the sample points that will be used to develop a regression line is called

   1. a sample graph.

   2. a regression diagram.

   3. a scatter diagram.

   4. a regression plot.

3. When using regression, an ...