Question

The monthly salaries (in thousands of dollars) of a sample of sales representatives are as follows:
13, 7, 10, 9, 8, 13
Find the standard deviation of this sample of monthly salaries. Round your answer to at least two decimal places.



Find the mean first = sum of scores/number of scores

Subtract each of the scores from the mean and square each difference. Find the sum of these squares. Divide that by the number of scores to get variance.

Standard deviation = square root of variance

I'll let you do the calculations.

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