Chapter 1: Q. 52. (page 48)
Easy reading? Refer to Exercise 46. Describe the shape of the distribution.
Short Answer
Roughly symmetric
Single peak
No gaps
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Chapter 1: Q. 52. (page 48)
Easy reading? Refer to Exercise 46. Describe the shape of the distribution.
Roughly symmetric
Single peak
No gaps
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Women and children first? Here’s another table that summarizes data on survival status by gender and class of travel on the Titanic:

(a) Find the distributions of survival status for males and for females within each class of travel. Did women survive the disaster at higher rates than men? Explain.
(b) In an earlier example, we noted that survival status is associated with class of travel. First-class passengers had the highest survival rate, while third-class passengers had the lowest survival rate. Does this same relationship hold for both males and females in all three classes of travel? Explain.
I want candy! Mr. Starnes bought some candy for his AP® Statistics class to eat on Halloween. He offered the students an assortment of Snickers®, Milky Way®, Butterfinger®, Twix®, and 3 Musketeers® candies. Each student was allowed to choose one option. Here are the data on the type of candy selected. Make a relative frequency bar graph to display the data. Describe what you see.

Paying for championships Does paying high salaries lead to more victories in professional sports? The New York Yankees have long been known for having Major League Baseball’s highest team payroll. And over the years, the team has won many championships. This strategy didn’t pay off in 2008, when the Philadelphia Phillies won the World Series. Maybe the Yankees didn’t spend enough money that year. The figure shows histograms of the salary distributions for the two teams during the 2008 season. Why can’t you use these graphs to effectively compare the team payrolls?

U.S. women’s soccer—2016 Earlier, we examined data on the number of goals scored by the 2016 U.S. women’s soccer team in 20 games played. The following dotplot displays the goal differential for those same games, computed as U.S. goals scored minus opponent goals scored.

Part (a). Explain what the dot above 3 represents.
Part (b). What does the graph tell us about how well the team did in 2016? Be specific.
Facebook and age Refer to the preceding exercise.
Part (a). Find the distribution of Facebook use for each of the three age groups. Make a segmented bar graph to compare these distributions.
Part (b). Describe what the graph in part (a) reveals about the association between age and Facebook use.
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