25. Comparing Compact SUVs. Consumer Reports evaluates products for consumers.

The file CompactSUV contains the data shown in Table 1.8 for 15 compact sports utility vehicles (SUVs) from the 2018 model line (Consumer Reports website):

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 kilometers per liter—kilometers per liter achieved in a 240-kilometer test trip Acceleration (0–100 sec)—time in seconds it takes vehicle to reach 100 kilometers per hour from a standstill with the engine idling

a. How many variables are in the data set?

b. Which of the variables are categorical, and which are quantitative?

c. What percentage of these 15 vehicles are recommended?

d. What is the average of the overall kilometers per liter across all 15 vehicles?

e. For owner satisfaction, construct a bar chart similar to Figure 1.4.

f. Show the frequency distribution for acceleration using the following intervals: 7.0–

7.9, 8.0–8.9, 9.0–9.9, and 10.0–10.9. Construct a histogram similar to Figure 1.5.

TABLE 1.8 Consumer reports Data Set for 15 Compact Sports Utility Vichicles Make Model Overall Score Recommended Owner Satisfaction Overall Kilometers Per Liter Acceleration (0–100) Sec Subaru Forester 84 Yes + 11.0 9.0 Honda CRV 83 Yes ++ 11.4 8.9 Toyota Rav4 81 Yes ++ 10.2 9.6 Nissan Rogue 73 Yes + 10.2 9.8 Mazda CX-5 71 Yes ++ 10.2 8.9 Kia Sportage 71 Yes + 9.7 9.9 Ford Escape 69 Yes 0 9.7 10.5 Volkswagen Tiguan Limited 67 No 0 8.9 8.8 Volkswagen Tiguan 65 No + 10.6 10.7 Mitsubishi Outlander 63 No 0 10.2 10.4 Chevrolet Equinox 63 No 0 13.1 10.5 Hyundai Tucson 57 No 0 11.0 8.7 GMC Terrain 57 No 0 9.3 7.5 Jeep Cherokee 55 No – 9.3 11.3 Jeep Compass 50 No 0 10.2 10.1