Find the interquartile range

Order the data. Find the median of the lower half (Q1) and of the upper half (Q3). IQR = Q3 − Q1.

1. Find the interquartile range (IQR) of this data set: 9, 16, 4, 6, 6, 4, 6, 16
2. Find the interquartile range (IQR) of this data set: 9, 8, 8, 13, 11, 7, 2, 14
3. Find the interquartile range (IQR) of this data set: 6, 14, 20, 4, 20, 20, 5, 13
4. Find the interquartile range (IQR) of this data set: 11, 11, 14, 20, 17, 11, 12, 4
5. Find the interquartile range (IQR) of this data set: 26, 7, 25, 8, 12, 13, 13, 15
6. Find the interquartile range (IQR) of this data set: 6, 28, 22, 10, 17, 22, 10, 20, 20, 11
7. Find the interquartile range (IQR) of this data set: 26, 28, 9, 24, 15, 7, 23, 9, 3, 12
8. Find the interquartile range (IQR) of this data set: 23, 17, 13, 14, 8, 5, 15, 15
9. Find the interquartile range (IQR) of this data set: 4, 4, 8, 7, 3, 23, 8, 24, 9
10. Find the interquartile range (IQR) of this data set: 8, 19, 20, 24, 5, 23, 4, 9, 6
11. Find the interquartile range (IQR) of this data set: 18, 29, 5, 24, 1, 13, 17, 14, 7, 26, 18
12. Find the interquartile range (IQR) of this data set: 9, 20, 14, 30, 15, 7, 17, 18, 1
13. Find the interquartile range (IQR) of this data set: 18, 23, 30, 29, 58, 7, 34, 27
14. Find the interquartile range (IQR) of this data set: 8, 45, 18, 3, 45, 33, 47, 5, 20, 18, 21
15. Find the interquartile range (IQR) of this data set: 34, 51, 9, 54, 3, 12, 60, 26, 36, 17
16. Find the interquartile range (IQR) of this data set: 15, 46, 43, 36, 49, 2, 1, 29, 8, 36, 17
17. Find the interquartile range (IQR) of this data set: 18, 194, 177, 133, 25, 148, 128, 65, 115
18. Find the interquartile range (IQR) of this data set: 126, 137, 40, 36, 143, 185, 180, 59, 92
19. Find the interquartile range (IQR) of this data set: 37, 184, 182, 173, 136, 111, 163, 175, 94
20. Find the interquartile range (IQR) of this data set: 141, 71, 75, 105, 160, 73, 176, 108, 10