Question
In a data set, let the first and third quartiles be 268.25 and 290.75, respectively. The quartile deviation is equal to:
This question was previously asked in
SSC CGL 2024 (Tier-I) Previous Year Paper (17-Sep-2024) (Shift 3)
The correct answer is
11.25
Quartile deviation = \(\frac{Q_3 - Q_1}{2} = \frac{290.75 - 268.25}{2} = 11.25\). This measures dispersion of the middle 50% of data.
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