For the Houses data file, Table 14.13 shows results of fitting a quadratic regression model with s
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For the Houses data file, Table 14.13 shows results of fitting a quadratic regression model with s = size as the predictor.
(a) Interpret the coefficients of this equation.What shape does it have?
(b) Find the predicted selling price for homes with (i) s = 1000 square feet, (ii) s = 2000 square feet, (iii) s = 3000 square feet. Explain why the effect of a 1000-square-foot increase in s increases as s increases.
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