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Get the passenger car mileage data from http://lib.stat.cmu.edu/DASL/Data?les/carmpgdat.html

(a) Fit a multiple linear regression model to predict MPG (miles per gallon) from the other variables. Summarize your analysis.

(b) Use Mallow Cp to select a best sub-model. To search through the models try (i) forward stepwise, (ii) backward stepwise. Summarize your ?ndings.

(d) Perform all possible regressions. Compare Cp and BIC. Compare the results.

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