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# Regression Analysis : Interpretation of slope

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12.8 (a) Interpret the slope of the fitted regression Sales = 842 &#8722; 37.5 Price. (b) If Price = 20, what is the prediction for Sales? (c) Would the intercept be meaningful if this regression represents DVD sales at Blockbuster?

12.9 (a) Interpret the slope of the fitted regression Home Price = 125,000 + 150 Square Feet. (b) What is the prediction for Home Price if Square Feet = 2,000? (c) Would the intercept be meaningful if this regression applies to home sales in a certain subdivision?

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#### Solution Preview

Slope Interpretation
I am having difficulty with the following two problems, I would appreciate any guidance that you can provide.

12.8 (a) Interpret the slope of the fitted regression Sales = 842 − 37.5 Price. (b) If Price = 20, what is the prediction for Sales? (c) Would the intercept be meaningful if this regression represents DVD sales at Blockbuster?
a). ...

#### Solution Summary

The solution provides interpretation of slope from the regression analysis.

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