Ononot — A dataset has Q1 = 20, median = 50, and Q3 = 72. Two student

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Descriptive Statisticshard

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A dataset has $Q_1 = 20$ , median = 50, and $Q_3 = 72$ . Two students calculate the skewness coefficient. Student A uses the quartile method: $S_q = \frac{(Q_3-M)-(M-Q_1)}{Q_3-Q_1}$ . What is $S_q$ , and what does the sign indicate?