Make—manufacturer Model—name of the model Overall score—awarded based on a variety of measures, including those in this data set Recommended—Consumer Reports recommends the vehicle or not Owner satisfaction—satisfaction on a five-point scale based on the percentage of owners who would purchase the vehicle again (−−, −, 0, +, ++) Overall miles per gallon–miles per gallon achieved in a 150-mile test trip Acceleration (0–60 sec)—time in seconds it takes vehicle to reach 60 miles per hour from a standstill with the engine idling Make Model Overall Score Recommended Owner Satisfaction Overall Miles Per Gallon Acceleration (0–60) Sec Subaru Forester 84 Yes + 26 8.7 Honda CRV 83 Yes ++ 27 8.6 Toyota Rav4 81 Yes ++ 24 9.3 Nissan Rogue 73 Yes + 24 9.5 Mazda CX-5 71 Yes ++ 24 8.6 Kia Sportage 71 Yes + 23 9.6 Ford Escape 69 Yes 0 23 10.1 Volkswagen Tiguan Limited 67 No 0 21 8.5 Volkswagen Tiguan 65 No + 25 10.3 Mitsubishi Outlander 63 No 0 24 10.0 Chevrolet Equinox 63 No 0 31 10.1 Hyundai Tucson 57 No 0 26 8.4 GMC Terrain 57 No 0 22 7.2 Jeep Cherokee 55 No − 22 10.9 Jeep Compass 50 No 0 24 9.8 (a) How many variables are in the data set?