Compare Two Populations Using Graphs

Use the box-and-whisker plots to determine which statement is not true.

• The interquartile range of the men’s ages is greater than the interquartile range of the women’s ages.

• The youngest member of the club is a woman.

• The median of the men’s ages is greater than the median of the women’s ages.

• The range of the men’s ages is greater than the range of the women’s ages.

The box-and-whisker plots show the points scored in each Super Bowl by the AFC and NFC. About how many points higher is the upper quartile for the NFC than the AFC?

• 5 points

• 7 points

• 10 points

• 15 points

The box-and-whisker plots show the points scored in each Super Bowl by the AFC and NFC. For which division were 75% of the points scored greater than 16 points?

• AFC

• NFC

• both divisions

• neither division

The box-and-whisker plots show the test scores of two different classes. Which class had a greater range of test scores?

• There is no range.

• 2nd period

• the ranges are the same

• 1st period

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A random sample of 21 students at Daulton Elementary and at Spenser Elementary is asked how many sibling they have. The results are pictured. When comparing the two populations, which statement is NOT supported by the data?

• The students at Spenser Elementary tend to have more siblings than the students at Daulton Elementary.

• The range in the data for Daulton Elementary is the same as the range in the data for Spenser Elementary.

• The median number of siblings for Daulton Elementary is larger than the median number of siblings for Spenser Elementary.

• The students at both elementary schools tend to have 2 or more siblings.

Every Friday, the French Club sells bagels and the Spanish Club sells doughnuts to raise money for charity. The double dot plot shows how many items the clubs sell over several weeks. Which club typically sells more items?

• French Club

• No inference can be made from the graph.

• Spanish Club

• Both clubs sell the same number of items.

The double dot plots show the average wait times in minutes for two popular rides at an amusement park. Which ride typically has a longer wait time?

• No inference can be made from the graph.

• Topsy Turvy

• The wait times are the same for both rides.

• Rocket Blast

Use the box-and-whisker plots to determine which statement is not true.

• The interquartile range of the average monthly temperatures of New Orleans is greater than the interquartile range of the average monthly temperatures of Indianapolis.

• The median of the average monthly temperatures of New Orleans is equal to the upper quartile of the average monthly temperatures of Indianapolis.

• Half of the average monthly temperatures of Indianapolis are less than the lowest average monthly temperature of New Orleans.

• The average monthly temperatures of New Orleans are not as varied as the average monthly temperatures of Indianapolis.