In Chapter 11, the regression of retail sales per household on disposable income per household was estimated

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In Chapter 11, the regression of retail sales per household on disposable income per household was estimated by least squares. The data are given in Table 11.1, and Table 11.2 shows the residuals and the predicted values of the dependent variable. Use the data file Retail Sales.
a. Graphically check for heteroscedasticity in the regression errors.
b. Check for heteroscedasticity by using a formal test.
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Statistics For Business And Economics

ISBN: 9780132745659

8th Edition

Authors: Paul Newbold, William Carlson, Betty Thorne

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