Answer:
21
Step-by-step explanation:
1. Re-order numbers from low to high
85, 90, 94, 96, 98, 100, 102, 104, 115, 118, 125
2. Find Q1 and Q3: they are the middle number of top and bottom half of the data
Q1 is 94, Q3 is 115
3. Find IQR
IQR = Q3 - Q1 = 115 - 94 = 21
