The box plots show the average gas mileage, in miles per gallon, of the cars sold at a dealership in June and in December. Gas Mileage of Cars Sold in June 2 box plots. The number line goes from 14 to 34. For cars sold in June, the whiskers range from 21 to 33, and the box ranges from 22 to 29. A line divides the box at 24. For Cars sold in December, the whiskers range from 14 to 26, and the box ranges from 18 to 21. A line divides the box at 19. Gas Mileage of Cars Sold in December Which inference can be made about the cars? The type of cars sold in June typically gets better gas mileage. The type of cars sold in December typically gets better gas mileage. The types of cars sold in the two months typically get about the same gas mileage. The types of cars sold in the two months typically get better gas mileage than those sold in other months.