Discussion Questions and Problems
Discussion Questions
4-1 What is the meaning of least squares in a regression model?
4-2 Discuss the use of dummy variables in regression analysis.
4-3 Discuss how the coefficient of determination and the coefficient of correlation are related and how they are used in regression analysis.
4-4 Explain how a scatter diagram can be used to identify the type of regression to use.
4-5 Explain how the adjusted value is used in developing a regression model.
4-6 Explain what information is provided by the F test.
4-7 What is the SSE? How is this related to the SST and the SSR?
4-8 Explain how a plot of the residuals can be used in developing a regression model.
Problems
4-9 John Smith has developed the following ...
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