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The interquartile range describes the spread of the middle share of the data equal to:
A75 percent
B90 percent
C50 percent
D25 percent
Answer & Solution
Correct answer: C. 50 percent
1. Q1 cuts off the bottom quarter and Q3 the top quarter.
2. What remains between them is the middle half.
3. So the interquartile range covers 50 percent.
_Source: OpenStax Introductory Statistics 2e, Chapter 2, Descriptive Statistics._
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