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8. Find the variance, standard deviation, and sample mean of the given data. 30-34 35-39 40-44 45-49 Total a. Variance = b. Standard Deviation =

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8. Find the variance, standard deviation, and sample mean of the given data. 30-34 35-39 40-44 45-49 Total a. Variance = b. Standard Deviation = c. Sample Mean = from aj and b), wiviel

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