Question: Chapter 3 Mean: EX X = N Chapter 4 IQR = Q3 - Q1 Variance (52) Definitional formula: E(X - X) 2 $2 = N

Chapter 3 Mean: EX X = N Chapter 4 IQR = Q3 - Q1 Variance (52) Definitional formula: E(X - X) 2 $2 = N - 1 Computational formula: EX2 _ (EX)2 $2 = N N - 1 Standard deviation (s) S = VS2

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