Description

8 steps using dataset {12, 15, 18, 22, 25, 28, 30, 35, 42}: (1) RANGE: Highest - Lowest = 42 - 12 = 30. Simple but affected by outliers. (2) To find IQR, first find the MEDIAN: 9 values → 5th value = 25. (3) Split data into lower half {12, 15, 18, 22} and upper half {28, 30, 35, 42}. (4) Q1 (lower q

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