Home Depot, a home-improvement retailer, sells several brands of washing machines. The following table contains a sample

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Home Depot, a home-improvement retailer, sells several brands of washing machines. The following table contains a sample of 24 models of full-size washing machines sold by Home Depot in 2016, with each observation recording the washing machine capacity (in cubic feet) and the list price (in $) (Home Depot website). 

Model Сарacity List Price 4.8 $749 Maytag High-Efficiency Top Loading Washer with Steam Samsung High-Efficiency Top Loading Washer with Active Wash and Integrated Touch Controls Whirlpool High-Efficiency Front Loading Washer with Steam Maytag High-Efficiency Top Loading Washer Whirlpool High-Efficiency Top Loading Washer Samsung High-Efficiency Front Loading Washer Samsung High-Efficiency Front


a. Develop a scatter diagram for these data, treating cubic feet as the independent variable. Does a simple linear regression model appear to be appropriate? 

b. Use a simple linear regression model to develop an estimated regression equation to predict the list price given the cubic feet. Construct a standardized residual plot. Based upon the standardized residual plot, does a simple linear regression model appear to be appropriate? 

c. Using a second-order model, develop an estimated regression equation to predict the list price given the cubic feet.

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Modern Business Statistics With Microsoft Excel

ISBN: 9781337115186

6th Edition

Authors: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran

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