Chapters 1 through 4 - The University of Tennessee at ...

Ungrouped Data SAMPLE POPULATION. Mean. where n = sample size where N = size of population. Interquartile Range. IQR = Q3 - Q1 (Same as for sample) where: Q3 = third quartile (i.e., 75th percentile) Q1 = first quartile (i.e., 25th percentile) Variance. or: or: Standard Deviation. Coefficient of Variation (C.V.) Covariance ................
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