The R2 values are essentially the same in all three models in Question 14. The coefficients for Mileage also stay roughly the same for all three models—the inclusion of Liter or Cyl in the model does not appear to influence the Mileage coefficient. Depending on which model is used, we state that for each additional mile on the car, Price is reduced somewhere between $0.152 to $0.16. Describe how the coefficient for Liter depends on whether Cyl is in the model.