For the data (taking the median of each half of the data for the quartiles), what is the interquartile range?
Answer and explanation
Correct answer: D.
- Step 1: The median is ; the lower half is with median , and the upper half has median . Step 2. The interquartile range is . **Answer: . Why not the others:** is , is the result when the median is wrongly included in both halves, and is the value of in that case.
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