Determine the interquartile range of the data set: .
Answer and explanation
Correct answer: C.
- Step 1: Arrange the data in ascending order and locate quartiles. There are values. The median () is the 4th value: .
- Step 2: The lower half of data is , so the first quartile . The upper half is , so the third quartile . Interquartile range .
Answer
.
Why not the others: '' is the value of ; '' is the median ; '' is the overall range of the data ().
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