- A18
- B7
- C5
- D10
Step-by-Step Solution
Median . Lower half 3, 5, 7, 8: . Upper half 13, 14, 18, 21: . IQR .
Answer: D) 10
For the data 3, 5, 7, 8, 12, 13, 14, 18, 21, take Q1 and Q3 as the medians of the lower and upper halves (the median itself is left out of both halves). What is the interquartile range?
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