The U$.$S$.$ Department of Energy$$s Fuel Econ$-$ omy Guide provides fuel efficiency data for cars and trucks. A portion of the data for $311$ compact, midsized, and large cars follows. The Class column identifies the size

of the car: Compact, Midsize, or Large. The Displacement column shows the engine$$s displacement in liters. The FuelType column shows whether the car uses premium $($P$)$ or regular $($R$)$ fuel, and the HwyMPG column shows the fuel efficiency rating for high$-$ way driving in terms of miles per gallon. The complete data set is contained in the file FuelData:The U$.$S$.$ Department of Energy$$s Fuel Econ$-$ omy Guide provides fuel efficiency data for cars and trucks. A portion of the data for $311$ compact, midsized, and large cars follows. The Class column identifies the size

of the car: Compact, Midsize, or Large. The Displacement column shows the engine$$s displacement in liters. The FuelType column shows whether the car uses premium $($P$)$ or regular $($R$)$ fuel, and the HwyMPG column shows the fuel efficiency rating for high$-$ way driving in terms of miles per gallon. The complete data set is contained in the file FuelData:The U$.$S$.$ Department of Energy$$s Fuel Econ$-$ omy Guide provides fuel efficiency data for cars and trucks. A portion of the data for $311$ compact, midsized, and large cars follows. The Class column identifies the size

of the car: Compact, Midsize, or Large. The Displacement column shows the engine$$s displacement in liters. The FuelType column shows whether the car uses premium $($P$)$ or regular $($R$)$ fuel, and the HwyMPG column shows the fuel efficiency rating for high$-$ way driving in terms of miles per gallon. The complete data set is contained in the file FuelData:The U$.$S$.$ Department of Energy$$s Fuel Econ$-$ omy Guide provides fuel efficiency data for cars and trucks. A portion of the data for $311$ compact, midsized, and large cars follows. The Class column identifies the size

of the car: Compact, Midsize, or Large. The Displacement column shows the engine$$s displacement in liters. The FuelType column shows whether the car uses premium $($P$)$ or regular $($R$)$ fuel, and the HwyMPG column shows the fuel efficiency rating for high$-$ way driving in terms of miles per gallon. The complete data set is contained in the file FuelData: