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Statistics for Business & Economic...

12th Edition
David R. Anderson + 4 others
ISBN: 9781285846323

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BuyFindarrow_forward

Statistics for Business & Economic...

12th Edition
David R. Anderson + 4 others
ISBN: 9781285846323
Textbook Problem

The U.S. Department of Energy provides fuel economy information for a variety of motor vehicles. A sample of 10 automobiles is shown in Table 1.6 (Fuel Economy website, February 22, 2008). Data show the size of the automobile (compact, midsize, or large), the number of cylinders in the engine, the city driving miles per gallon, the highway driving miles per gallon, and the recommended fuel (diesel, premium, or regular).

a.    How many elements are in this data set?

b.    How many variables are in this data set?

c.    Which variables are categorical and which variables are quantitative?

d.    What type of measurement scale is used for each of the variables?

TABLE 1.6    FUEL ECONOMY INFORMATION FOR 10 AUTOMOBILES

Car Size Cylinders City MPG Highway MPG Fuel
Audi A8 Large 12 13 19 Premium
BMW 328Xi Compact 6 17 25 Premium
Cadillac CTS Midsize 6 16 25 Regular
Chrysler 300 Large 8 13 18 Premium
Ford Focus Compact 4 24 33 Regular
Hyundai Elantra Midsize 4 25 33 Regular
Jeep Grand Cherokee Midsize 6 17 26 Diesel
Pontiac G6 Compact 6 15 22 Regular
Toyota Camry Midsize 4 21 31 Regular
Volkswagen Jetta Compact 5 21 29 Regular

a.

To determine

Find the number of elements in the data set.

Explanation

Calculation:

As ample of 10 automobiles is given. The data provide information about the size of the automobile, the number of cylinders in the engine, the city-driving miles per gallon, the highway-driving miles per gallon, and the recommended fuel...

b.

To determine

Find the number of variables.

c.

To determine

Find the categorical and quantitative variables.

d.

To determine

Identify the type of measurement scale used for the variables.

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