Do women study more than men? We asked the students in a large first-year college class how many minutes they studied on a typical weeknight. Here are

the responses of random samples of $30$ women and $30$ men from the class:

(a) Examine the data. Why are you not surprised that most responses are multiples of 10 minutes? Are there any responses you consider suspicious?

(b) Make a back-to-back stem plot to compare the two samples. Does it appear that women study more than men (or at least claim that they do)? Justify your answer.

The table is

The peak of the dot plot is at this means that during that season, the team's most common number of goals scored in games (known as the mode) was The United States women's soccer team scored between one and five goals in the majority of its games. The distribution, however, has a large tail to the right.

When students in a big first-year college class were asked how many minutes they spent studying on a typical evening, the answer was surprising. Because they tried to round off their responses to the nearest half-hour, they all responded in multiples of $10$ minutes. One female responded with a time of $360$ minutes, which is highly suspicious and stands out among the present statistics.

The following is a back-to-back stem plot of the data:

Leaf unit $=10$

Ten out of thirty female students responded in $180$ minutes, whereas seven out of thirty male students responded in $120$ minutes. Females reach a higher peak than males do. As a result, females appear to study more than males.