Statistics Review

The number of points in the first 5 games of the basketball season are listed. What is the mean number of points scored?

• 32.6

• 31.6

• 33

• 30

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 of the students read for 30-40 minutes.

• The interquartile range is 30.

• About half of the students read for 50 minutes.

• 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 of the following statements is NOT correct?

• There are a total of 17 students in Mrs. Ferro's class.

• Exactly 7 students volunteered for less than 7 hours.

• Less than half of the students volunteer for 9 hours or more.

• The range is data was 5 hours.

The number of wins in the 2015 season in the American League is shown. What is the median of the number of wins in the American League?

• 81

• 80

• 82

• 81.5

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 22 or older.

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

Which of the statements about the data in the histogram are true?

• A total of 30 teams were included in the data.

• Over half of the teams made 26-30 field goals in a season.

• There were 13 teams that made between 21-25 field goals during the season.

• A total of 18 teams made 26 or more field goals.

The data set represents the different costs of monthly internet service. What is the mean?

• $45

• $50

• $55

• $60

The dot plot represents the number of dollars in allowance that students receive each week in Mrs. Jimenez's class. What is the median amount of allowance?

• 5

• 6

• 7.5

• 8

Which of the following statements is the best description for the data?

• The data is spread out and skewed left.

• Most of the data is far from the median and skewed right.

• The data is symmetrical and close to the median.

• The data is spread out with $5 being the most common weekly allowance.

Which of the following statements best describes the data shown?

• The distribution of the data is symmetrical, so the mean and median are likely within 2-3 miles.

• The distribution of the data is skewed right, so the mean and median are likely within 1-2 miles.

• The distribution of the data is skewed left, so the mean and median are likely within 1-2 miles.

• The distribution of the data is skewed left, so the mean and median are likely within 3-4 miles.