CHALLENGE Identify the histograms. A survey of a large college class asked the following questions:

1. Are you female or male? (In the data, male = 0, female = 1.)

2. Are you right-handed or left-handed? (In the data, right = 0, left = 1.)
3. What is your height in inches?
4. How many minutes do you study on a typical weeknight?
Figure 1.17 shows histograms of the student responses, in scrambled order and without scale markings. Which histogram goes with each variable?
Explain your reasoning.

(a) (b)

(c) (d)
FIGURE 1.17 Match each histogram with its variable, for Exercise 1.37.