Researchers theorize that people who drive red cars are more erratic than people who drive cars of other colors. To test this claim, they obtained a sample of drivers of red cars, and another sample of drivers of blue cars. The gas mileage (miles per gallon) for each driver was obtained. The data are summarized in the boxplot.

Is there any indication that the variability in gas mileage is different for red cars than it is for blue cars? Briefly explain how you use the boxplots to answer this question.

50 - - 45 40 Mileage 35 30 25 20 blue red Color