In a study of the number of pages read per day, the lower quartile (Q1) is 20 pages and the upper quartile (Q3) is 40 pages. What is the Interquartile Range (IQR) for this study? _________.
Answer & Analysis
Analysis
Question Analysis
This question tests the student's ability to calculate the Interquartile Range (IQR) using the given values of Q1 and Q3. The IQR is a measure of the spread of the middle 50% of the data.
Key Concept Explanation
The Interquartile Range (IQR) is the difference between the upper quartile (Q3) and the lower quartile (Q1). It provides a measure of the dispersion of the central 50% of the data.
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