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Chapter 3: Q 31. (page 175)

The following graph plots the gas mileage (in miles per gallon) of various cars from the same model year versus the weight of these cars (in thousands of pounds). The points marked with red dots correspond to cars made in Japan. From this plot, we may conclude that

a. there is a positive association between weight and gas mileage for Japanese cars.

b. the correlation between weight and gas mileage for all the cars is close to 1.

c. there is little difference between Japanese cars and cars made in other countries.

d. Japanese cars tend to be lighter in weight than other cars.

e. Japanese cars tend to get worse gas mileage than other cars.

Short Answer

Expert verified

The correct option is (d) Japanese cars tend to be lighter in weight than other cars.

Step by step solution

01

Given information

The scatter plot is:

02

Explanation

The presented scatterplot depicts the inverse relationship between the graph's two variables. The narrative reveals that the cars manufactured in Japan weigh less than 3000 pounds. As a result, it is possible to deduce that the weight of automobiles manufactured in Japan is lower than that of cars manufactured in other nations. Hence, the correct option is (d).

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