Fuel economy. Here is a small part of a data set that describes the fuel economy (in miles per gallon) of model year 2010 motor vehicles:

(in miles per gallon ) of model year 2010 motor vehicles: Make and Vehicle Transmission Number of City Highway Carbon model type type cylinders mpg mpg footprint (tons) . . Aston Martin Vantage Two-seater Manual 8 12 19 13.1 Honda Civic Subcompact Automatic 4 25 36 6.3 Toyota Prius Midsize Automatic 4 51 48 3.7 Chevrolet Impala Large Automatic 6 18 29 8.3