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Percentiles & Quartiles
3. Describing Data Numerically / Percentiles & Quartiles / Problem 6
Problem 6

An online retailer tracks how long customers spend in live chat (in minutes) to resolve an issue. For a recent month, the summary for a sample of chats is: Q1=18Q_1=18, Q2=24Q_2=24, Q3=35Q_3=35. Determine the interquartile range (IQRIQR).