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Stepwise Regression: Laptop Prices

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Suppose that you are interested in predicting the price of a laptop computer based on its various features. The file P11_35.xlsx contains observations on the sales price and a number of potentially relevant variables for a randomly chosen sample of laptop computers. Employ stepwise regression to decide which explanatory variables to include in a regression equation. Use the p-value method with a cutoff value of 0.05 for entering and leaving.

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The solution employs a stepwise regression to decide which explanatory variables to include in a regression equation. It also uses the p-value method with a cutoff value of 0.05 for entering and leaving.

Solution provided by:
Anwesha Ghosh, MSc
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  • MSc, Osmania University
  • MSc, Indian Institute of Technology - Roorkee (I.I.T.-ROORKEE)
  • BSc, Banaras Hindu University
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