Mathematics for IGCSE & O level - Statistical Diagrams (Section 5 - No. 45)
How can the interquartile range (IQR) be calculated?
Q1 - Q3
Q3 - Q1
Q2 - Q1
Q3 - Q2
Explanation
IQR is calculated as the upper quartile (Q3) minus the lower quartile (Q1).
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