# Chapter 3 Homework(Starnes, Yates & Moore, 4th edition)

This chapter is a big and important one. Carefully note the green definition boxes, and read the examples to clarify your understanding. The practice test at the end of the chapter as well as the "Check your understanding" questions throughout the chapter are great for multiple choice practice.

### Section 3.1: Scatterplots and Correlation

Read the chapter, especially note well:
• Summary pp. 157
• Scatterplots p. 144
• Interpreting Scatterplots, p. 146
• Correlation p. 151
• Tech Toolbox p.149,

### Section 3.2: Least Squares Regression

1. Summary pp. 190
2. LSRL r, p. 164 ff, 172
3. residual 168
4. Std Dev of the residual p 177
5. Residual Plots p 175
6. Role of r2 in regression p. 180
7. Tech Toolbox 170-171, 178
• Influential Observations, pp. 187

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49
59
63
71

R3.5
R3.6
R3.7

## Terms

Scatterplots, Correlation, Regression Line,r,r2, Residuals, Residual Plots, Influential Observations, Lurking Variables

## Skills

Making and Interpreting Scatterplots, Regression Lines, and Residual Plots.