For recommendations on which laptop to purchase, consumers look at the ratings provided by Consumer Reports. A sample of 12 laptops was selected and the rating and score on the laptops' features were recorded as shown in the ‘laptops' file. The description of the variables in the ‘laptops' file is as follows: model (brand and description of laptop), price (retail price of laptop), rating (overall score by Consumer Reports), and features (a score of 1, 2, or 3 with low values indicating more features).
a) Find the prediction equation for the price of a laptop using rating and features. What is the value of the residual standard deviation?
b) If the value of SSE were equal to zero for this problem what would that imply?