Question: Build a new regression model using TPrice as the response and Mileage, Liter, Saturn, Cadil-lac, Chevrolet, Pontiac, and SAAB as the explanatory variables. Explain why

Build a new regression model using TPrice as the response and Mileage, Liter, Saturn, Cadil-lac, Chevrolet, Pontiac, and SAAB as the explanatory variables. Explain why you expect the R2 value to increase when you add terms for Make.

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