STAAR Review III

1. The following list shows the number of new memberships that a gym has sold each day over the past week:

4, 2, 9, 2, 0, 3, 8

What is the Median

2. Hannah is filling a 15 gallon cooler with water. The cooler is filling at a rate of 2.5 gallons every 90 seconds. At this rate, how many seconds will it take to fill the entire cooler?

• 540 seconds

• 3,375 seconds

• 1,080 seconds

• 37.5 seconds

3. The histogram shows the number of minutes that Carol spent talking on the phone each day over the last few weeks. For how many days did Carol spend 30 minutes or more talking on the phone?

4. The owner of a snow cone stand recorded the number of each size snow cone that customers ordered over the weekend. The results are shown in the percentage bar graph. Which table could be represented by the percentage bar graph?

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• 
• 
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5. The stem-and-leaf plot shows the number of minutes that various customers spent shopping at a department store in the mall. Which of the statements about the data is true?

• The data represents the time spent by 15 different customers.

• The mode of the data is 44 minutes.

• The median of the data is 27 minutes.

• The range of the data is 44 minutes.

6. Students in Mr. Fargo’s class tracked the number of minutes that they spent on homework the night before. The box plot shows the results. Which is a true statement about the box plot?

• The interquartile range is 50.

• About 25% of students spent between 10-30 minutes.

• About 75% of students spent 20 minutes or more.

• The median is 20.

7. The list below shows the dollar amount that the last several customers spent at a candy store rounded to the nearest dollar:

2, 14, 8, 4, 10, 5, 19, 7, 1

Which of the following is a true statement about the data?

• The range of the data is 1.

• The interquartile range of the data is 9.

• The median of the data is 10.

• The average of the data is 9.

8. The histogram shows the scores that Cam has made on all of his math quizzes throughout the year. Which of the following statements is supported by the graph?

• Cam has taken a total of 3 quizzes this year.

• Cam scored a 79 or lower on a total of 5 quizzes this year.

• Cam scored an 80 or above on over half of his quizzes

       this year.

• Cam scored between a 40-59 on 10% of his quizzes

       this year.

9. Rachel recorded the number of letters in each of her classmates names. The box plot shows the results. Which is a true statement about the box plot?

• The interquartile range is 3.

• Over 50% of her classmates have 7 or more letters.

• The median is 6 letters.

• About 75% of her classmates have between 3-5 letters.

10. Calvin is painting an area that is 115 square feet. He is able to paint 2.5 square feet every 2 minutes. At this rate, how long will it take Calvin to paint the entire area?