Miles per gallon. Here is a small part of a data set that describes the fuel economy (in miles per gallon) of 2008 model motor vehicles:

Make and Vehicle Transmission Number of City Highway model type type cylinders mpg mpg

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BMW 328ci Subcompact car Automatic 6 19 28 BMW 325ci Subcompact car Manual 6 18 28 Buick LaCrosse Midsize car Automatic 6 17 28 Chevrolet Sport utility Automatic 6 14 20 TrailBlazer vehicle (2WD)

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(a) What are the individuals in this data set?

(b) For each individual, what variables are given? Which of these variables take numerical values?

AppendixLO1