Statistics Review

1. The number of points in the first five games of the basketball season are listed below. What is the mean number of points scored?

(a)  

8. The data below represents the number of runs scored in the last 15 games. Which statement best describes the data?

• A. The peak of the data is 3.
• B. The data distribution is symmetrical.
• C. The data distribution has several gaps.
• D. The range of the data is 6.

9. Which of the following situations best describes data without variability?

• A. The number of minutes it takes to make a cake
• B. The number of hours in a day
• C. The number of square feet in a one bedroom apartment
• D. The number of people attending the annual homecoming dance

10. Which of the following stem-and-leaf plots best represents the table below?

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3. The dot plot shows the number of hours the students in Mrs. Ferro’s class volunteer each month. Which of the following statements is NOT correct?

• A. There are a total of 17 students in Mrs. Ferro’s class.
• B. Exactly 7 students volunteered for less than 7 hours.
• C. Less than half of the students volunteer for 9 hours or more.
• D. The mode is 6 and 10.

4. Which statement about the data is true?

• A. The range is 20 minutes.
• B. The interquartile range is 10 minutes.
• C. The median number of minutes is 25.
• D. A total of 18 students were surveyed.

5. What is the mean number of minutes read?

(a)  

8. The number of wins in the 2015 season in the American League is shown below. What is the range of the number of wins in the American League?

(a)  

9. The dot plot below represents the number of dollars in allowance that students receive each week in Mrs. Jimenez’s class. Which statement best describes the data?

• A. skewed left
• B. skewed right
• C. symmetrical
• D. clustered from 0-4

10. The number of free throws made by the members of a basketball team is shown. Which best represents the data?

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