Calculate the interquartile range of the ordered data: 2, 3, 4, 11, 20, 21, 23, 29.
Answer and explanation
Correct answer: A.
- Step 1: and .
- Step 2: .
Answer
.
Why not the others: : this is the range, not the interquartile range. : this is Q3 alone. : Q1 was added instead of subtracted.
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