Interpreting Data from Box Plots & TFAR Review

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

• A quarter (25%) of the students read for 30-40 minutes.

• The interquartile range is 30.

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

• The mean, or the average, number of minutes read was 47.

The dot plot shows the number of hours the students in Mrs. Ferro's class volunteer each month. Which statement about the range and interquartile range best support the data?

• The range is 5, and the interquartile range is 4.

• The range is 8, and the interquartile range is 3.

• The range is 4, and the interquartile range is 5.

• The range is 15, and the interquartile range is 16.

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

• The oldest member is 24.

• The median age is 22.

• 50% of the team members are between 22 and 24.

Which of the following is likely to have the greatest variability?

• The cost of a piece of candy from a vending machine.

• The height of all the students at TVAH middle school.

• The age of all the students in the sixth grade.

• The number of days in a month.

The number of people on various teams within a soccer league are shown below. Which box plot best represents the data?

15, 16, 16, 18, 19, 19, 20, 20, 21, 22, 23

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The dot plot shows the number of hours the students in Mrs. Ferro's class volunteer each month. What is the median of the data from the box plot??

The number of people on a soccer team is summarized in the box plot shown. What is the interquartile range of the data in the box plot?

The average monthly rainfall during the summer and winter months are summarized in the two box plots shown.

Which statement about the two box plots is NOT true?

• The range in rainfall in the winter was 12 inches.

• For half of the months in the summer, the rainfall was greater than 11 inches.

• The median rainfall in the summer was 13 inches.

Which situation is most likely to yield data without variability?

• The number of minutes to drive to school.

• The amount Steve spent on yesterday's dinner.

• The price of a hamburger in the state of Texas.

• The age of students at TVAH middle school.

Which of these BEST describes the importance of a credit report?

• It determines whether or not a person has a place to live.

• It helps lenders decide whether or not to loan a person money.

• It prevents a person from putting their money into a bank account.

• It lets consumers know when a product is being recalled by a company.