Consider the data set: 40, 48, 62, 60, 62, 40, 25, 50, 20, 30, 55
Step 1: Q1 is the middle value in the first half of the data set (30)
Step 2: Q3 is the middle value in the second half of the data set (60)
Step 3: The interquartile range is Q3 minus Q1, so IQR = 60 - 30 = 30
First Quartile: 30
Third Quartile: 60
Median: 48
Interquartile Range: 30
Answer: IQR - 30