Making Inferences in Math

Based on the Box Plots, which statement is correct.

• Washington, D.C. had the hottest temperature recorded

• Washington, D.C. had the coldest temperature recorded

• The weather varied more in Washington, D.C.

• The temperatures had a higher measure of center in St. Louis

Based on the Box Plots, which statement is correct.

• The hottest temperature was recorded in St. Louis

• St. Louis had the coldest temperature recorded

• The temperatures had a higher measure of center in St. Louis

• The lowest temperature was recorded in Washington, D.C.

Based on the Box Plots, which statement is correct.

• The weather varied more in St. Louis

• The weather varied more in Washington, D.C.

• St. Louis had the hottest temperature recorded

• Washington D.C. had the coldest temperature recorded

How many red shirts do you have?

• 5 red shirts

• 17 red shirts

• 40 red shirts

• 83 red shirts

Litzy collects data from a random sample of 7th graders. Out of 40 respondents, 7 attend afterschool programs. Of the 200 7th graders attending Litzy's school, how many would be expected to attend afterschool programs?

• 14 7th graders

• 28 7th graders

• 35 7th graders

• 42 7th graders

A town has 35,000 registered voters. A random sample of 500 voters finds that 125 are in favor of a new dog park. How many are likely to vote for the dog park?

• 25

• 125

• 2,625

• 8,750

A random sample of 50 was taken from a shipment of 12,000 light bulbs. There were 2 broken bulbs in the sample. How many broken bulbs would you expect in the entire shipment?

• 240

• 480

• 2,400

• 4,800

Students record the number of minutes they read at home.  The box plot shows the summary of the results.  Which statement best describes the data? 

• A quarter of the students read for 30-40 minutes.

• The interquartile range is 30.

• About half the students read for 50 minutes or more.

• The average number of minutes read was 47.

Based on the box plot, which statement is NOT true?

• The oldest team member is 24.

• The median age is 22.

• Fifty percent of the participants are older than 22.

• Less than 25% of the participants are 20 or younger.

The box plot below shows the number of siblings in Mrs. Hines’ class. Which of the following statements is not true?

• The interquartile range of the data is approximately 2.

• The median number of siblings in Mrs. Hines' class is approximately 1.75.

• There is at least one student who has no siblings.

• Over half of the students in Mrs. Hines' class have two or more siblings.