Name: _______________________________Chapter 7 – Quiz Review

The list shows the top speeds of various land animals.32 52 22 48 25 51 47 50 37 41 49 24 35 52 44

1. Make a cumulative frequency table of the data.Scale Frequency Cumulative Frequency

2. Make a stem-and-leaf plot of the data.STEM LEAF

3. Make a line plot of the data.

The list shows the life spans in years of vampire bats in captivity.20 25 33 10 16 18 48 50 6 12 29 36 50

4. Find the mean, median, mode and range of the data. Round you answers to the nearest tenth of a year.

5. Which measure of central tendency best represents the data in question number 4? Explain.

Use the histogram for problems 6-8.6. How many students are in this class?

7. How many students are at least 28 years old?

8. What is the approximate median age of the students in this class?

9. The list below shows the numbers of tracks on a group of CDs. Make a histogram of the data. 40, 10, 16, 19, 3, 15, 7, 2, 17, 5, 8, 9, 19, 11, 15, 13, 1, 20

Use the circle graph fro problems 10 and 11.10. Approximately what percent of students

picked cheese as their favorite topping?

11. Out of 200 students 25% picked pepperoni as their favorite pizza topping? How many students picked pepperoni?