Chapter 3:

Interquartile range: Semi-interquartile range: Midquartile: 10-90 Percentile Range: To Determine if a Data Value is an Outlier: Find Q1 and Q3. Find the interquartile range (IQR): Q3 – Q1. Multiply the IQR by 1.5. The data value is an outlier if it is above Q3 by an amount greater than 1.5 x IQR ................
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