The accompanying table gives data from a survey of new car owners conducted by J.D. Power and Associates (USA TODAY, usatoday.com, March 29, 2016). For each brand of car sold in the United States, data on a quality rating (defects per 100 cars, so lower numbers indicate higher quality) and a customer satisfaction rating (called the APEAL rating) are given in the accompanying table. The APEAL rating is a score between O and 1000, with higher values indicating greater satisfaction.   Brand Quality Rating APEAL Rating Acura 64 814 Audi 80 858 BMW 76 849 Buick 74 792 Cadillac 58 826 Chevrolet 64 791 Chrysler 58 783 Dodge 58 790 Fiat 38 768 Ford 66 789 GMC 60 791 Honda 71 783 Hyundai 70 804 Infiniti 63 826 Jeep 43 762 Kia 72 791 Land Rover 55 853 Lexus 76 844 Lincoln 65 835 Mazda 74 790 Mercedes-Benz 67 842 MINI 68 795 Mitsubishi 51 748 Nissan 63 786 Porsche 76 882 Scion 65 779 Subaru 78 766 Toyota 72 783 Volkswagen 67 796 Volvo 69 812   Construct a scatterplot of x = quality rating and y = APEAL rating. (Hint: See Example 3.21.) Does customer satisfaction (as measured by the APEAL rating) appear to be related to car quality? Explain

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The accompanying table gives data from a survey of new car owners conducted by J.D. Power and Associates (USA TODAY, usatoday.com, March 29, 2016). For each brand of car sold in the United States, data on a quality rating (defects per 100 cars, so lower numbers indicate higher quality) and a customer satisfaction rating (called the APEAL rating) are given in the accompanying table. The APEAL rating is a score between O and 1000, with higher values indicating greater satisfaction.

 

Brand

Quality Rating

APEAL Rating

Acura

64

814

Audi

80

858

BMW

76

849

Buick

74

792

Cadillac

58

826

Chevrolet

64

791

Chrysler

58

783

Dodge

58

790

Fiat

38

768

Ford

66

789

GMC

60

791

Honda

71

783

Hyundai

70

804

Infiniti

63

826

Jeep

43

762

Kia

72

791

Land Rover

55

853

Lexus

76

844

Lincoln

65

835

Mazda

74

790

Mercedes-Benz

67

842

MINI

68

795

Mitsubishi

51

748

Nissan

63

786

Porsche

76

882

Scion

65

779

Subaru

78

766

Toyota

72

783

Volkswagen

67

796

Volvo

69

812

 

  1. Construct a scatterplot of x = quality rating and y = APEAL rating. (Hint: See Example 3.21.)
  2. Does customer satisfaction (as measured by the APEAL rating) appear to be related to car quality? Explain.
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