Name ____________________________

Unit 8 Final Assessment

1. The data set below depicts the number of points LeBron James scored in the last five NBA games. Find the mean, median, mode, and range for the points scored.

$25 \quad 27 \quad 25 \quad 29 \quad 22$

2. Henry has the following World History scores: 88, 76, 97, 84.

(a) What would Henry need to score on his fifth test to have an average of 86?

(b) Explain why it is not possible for Henry to have an average of 93 after his fifth score.

3. Use the following information to answer the questions.

12, 13, 15, 17, 21, 22, 24, 26, 28, 30, 31

a. Create a box-and-whisker plot.

b. What is the median of the set of data?

c. What is the median of the lower quartile?

d. What is the median of the upper quartile?

4. The circle graph shows the results of a music survey. What fraction of the people surveyed said country was their favorite type of music?

5. The data collected depicts the number of letters in the last names of twenty people.

$12 \quad 3 \quad 5 \quad 9 \quad 11 \quad 2 \quad 7 \quad 5 \quad 6 \quad 8 \quad 14 \quad 4 \quad 8 \quad 7 \quad 5 \quad 10 \quad 5 \quad 9 \quad 7 \quad 15$

a. Create a frequency table to display the data.

b. Create a histogram to display the data.

6. The graph below depicts the quarterly sales for two competing computer companies. Use the information on the graph to answer the question below.

a. True or false, each company has increased its computer sales each quarter?

b. True or false, one company has had a more significant increase in sales than the other?

c. Which company has had a more significant increase in sales?

d. What were the average sales for Computer Company 1 in quarter three?

e. What were the average sales for Computer Company 2 in quarter four?

f. Which company did not show much of a change in profits from quarter three to quarter four?

g. What were those average earnings for the last two quarters?

The data table below depicts the amount of weekly allowance received by fifteen teenagers.

$25 \quad 15 \quad 20 \quad 30 \quad 10 \quad 5 \quad 8 \quad 12 \quad 18 \quad 23 \quad 27 \quad 15 \quad 18 \quad 25 \quad 10$

7. Create a frequency table of the data.

8. Create a histogram of the data.

9. Create a box-and-whisker plot of the data.

10. Which display is the most accurate? Why?