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Measures of Dispersion — Economics STD 11 Commerce — Question

CBSE BoardEnglish MediumSTD 11 CommerceEconomicsMeasures of Dispersion1 Mark
Question
Why is the Quartile Deviation known as Semi-Inter Quartile Range?
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Answer

Quartile Deviation is known as Semi-Inter Quartile Range because half of the Inter-Quartile Range ($Q_3- Q_1$​​​​​​​) is called Quartile Deviation, i.e. Q.D. $=\frac{\text{Q}_3-\text{Q}_1}{2}.$

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