12. Regression
Residuals
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Practice this topic
- Multiple Choice
Which of the following residual plots suggest that a linear regression model is appropriate?
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1. What is a residual? Explain when a residual is positive, negative, and zero.
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"Old Vehicles In Exercises 31–34, use the figure shown at the left.
Error of Estimate Find the standard error of estimate Se and interpret the results."
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"Finding the Coefficient of Determination and the Standard Error of Estimate In Exercises 11-20, use the data to (b) find the standard error of estimate s_e and interpret the result.
12. [APPLET] Median and Mean Hourly Wages The table shows the median and mean hourly wages (in dollars) in 10 states in a recent year. The equation of the regression line is y = 1.208x + 1.495. (Source: U.S. Census Bureau)
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"Graphical Analysis In Exercises 1–3, use the figure.
1. Describe the total variation about a regression line in words and in symbols."
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