Question: A distribution has the following quartile values: Q1 = 30, Q2 = 57, Q3 = 70, Q4 = 100. What is the interquartile range (IQR)?

A distribution has the following quartile values: Q1 = 30, Q2 = 57, Q3 = 70, Q4 = 100. What is the interquartile range (IQR)? 40 48 57 78

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