Range and Interquartile Range Worksheets
Summarize numerical data and distinguish questions that expect variability.
Before you begin
Read tables and graphs, count outcomes, and calculate with fractions.
Worked example
For 9, 13, 17, 17, 25, 29, 33, 41, find the range. Use the median of each half for quartiles.
- Subtract the minimum from the maximum.
Answer: 32
Check your result using the method in the example before moving to the next question.
Choose your level
These sets use the same exercise types and number ranges across level labels. Choose a fresh set for additional practice.
- Easy: Start with the preview and follow the worked example.
- Medium: Practice the same exercise types with a fresh numbered set.
- Hard: Use another set to practice explaining and checking your answers.
Questions and answer calculations checked on 2026-09-17. How we check worksheets. Free for personal and classroom use.
Preview and print an easy set
Try six questions below, or choose a full set at your level.
1
For 5, 7, 9, 9, 13, 15, 17, 21, find the range. Use the median of each half for quartiles.
2
For 11, 15, 19, 19, 27, 31, 35, 43, find the interquartile range. Use the median of each half for quartiles.
3
For 2, 4, 6, 6, 10, 12, 14, 18, find the range. Use the median of each half for quartiles.
4
For 16, 19, 22, 22, 28, 31, 34, 40, find the interquartile range. Use the median of each half for quartiles.
5
For 1, 5, 9, 9, 17, 21, 25, 33, find the range. Use the median of each half for quartiles.
6
For 6, 9, 12, 12, 18, 21, 24, 30, find the interquartile range. Use the median of each half for quartiles.
Answer Key
1. 162. 163. 164. 125. 326. 12