Question 2.83

cartypemodel

83. Table 16 shows the numbers of vehicle models, which are categorized by vehicle type, examined each year by the U.S. Department of Energy to determine vehicle gas mileage. Use Table 16 to construct the following:

  1. Relative frequency distribution
  2. Frequency bar graph
  3. Relative frequency bar graph
  4. Pareto chart, using relative frequencies
  5. Pie chart of the relative frequencies
Table 2.32: TABLE 16 Frequency distribution of vehicle type
Vehicle type Number of models
SUVs 370
Compact cars 128
Midsize cars 120
Subcompact cars 110
Standard pickup trucks 106
Large cars 76
Station wagons 62
Small pickup trucks 59
Other types 151
Total 1182

2.1.83

(a) Relative frequency distribution of vehicle type

Vehicle type Relative frequency
SUVs 0.3130
Compact cars 0.1083
Midsize cars 0.1015
Subcompact cars 0.0931
Standard pickup trucks 0.0897
Large cars 0.0643
Station wagons 0.0525
Small pickup trucks 0.0499
Other types 0.1277
Total 1.0000

(b)

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(c)

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(d)

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(e)

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