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For a data set: If the sum of data= 108, the mean = 12 and the standard deviation = 2.5 Find: 1. Variance. 2- The

For a data set: If the sum of data= 108, the mean = 12 and the standard deviation = 2.5 Find: 1. Variance. 2- The standard error of mean (SEM) 3. The coefficient of variation (CV)

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