Chapter 1.1 Exploring Data

For which of the following would it be inappropriate to display the data with a single pie chart?

• The distribution of car colors for vehicles purchased in the last month

• The distribution of unemployment percentages for each of the fifty states

• The distribution of favorite sport for a sample of 30 middle school students

• The distribution if shoe type worn by shoppers at a local mall

• The distribution of presidential candidate preference for voters in a state

The following bar graph shows the distribution of favorite subjects for a sample of 1000 students. What is the most serious problem with the graph?

• The subjects are not listed in correct order

• The distribution should be displayed with a pie chart

• The vertical axis should show the percent of students

• The vertical axis should start at 0 rather than 100

• The foreign language bar should be broken up by language

In the 2010-2011 season, the Dallas Mavericks won the NBA championship. The two-way table below displays the relationship between the outcome of each game in the regular season and whether the Mavericks scored at least 100 points. Which of the following is the best evidence that there is an association between the outcome of a game and whether or not the Mavericks scored at least 100 points?

• The Mavericks won 57 games and lost only 25 games

• The Mavericks scored at least 100 points in 47 games and fewer than 100 points in only 35 games

• The Mavericks won 43 games when scoring at least 100 points and only 14 games when scoring fewer than 100 points

• The Mavericks won a higher proportion of games when scoring at least 100 points (43/47) than when they scored fewer than 100 points (14/35).

• The combination of scoring 100 or more points and winning occurred more often (43 times) than any other combination of outcomes.

The National Survey of Adolescent Health interviewed several thousand teens (grades 7-12). One question asked was "What do you think are the chances you will be married in the next ten years?" Here is a two-way table of the responses by gender. What is the percent of female respondents?

• 2625

• 4877

• about 46%

• about 54%

• None of these

The National Survey of Adolescent Health interviewed several thousand teens (grades 7-12). One question asked was "What do you think are the chances you will be married in the next ten years?" Here is a two-way table of the responses by gender. What percent of females thought that they were almost certain to be married in the next ten years?

• about 16%

• about 24%

• about 40%

• about 45%

• about 61%