Ononot — A dataset has Q1 = 28, Q3 = 72, and median = 50. The quartil

Descriptive Statisticsmedium

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A dataset has $Q_1 = 28$ , $Q_3 = 72$ , and median = 50. The quartile deviation is defined as: $QD = \frac{Q_3 - Q_1}{2}$

What is the quartile deviation, and what does it represent?