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26 November, 08:20

What is the variance of the following data? If necessary, round your answer to two decimal places. 12, 13, 8, 13, 9, 11, 12, 9, 11

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  1. 26 November, 08:32
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    To find the variance, 1. Find the arithmetic mean (average) 2. Find the distance of each number from the mean (x-the mean=?) 3. Square each number 4. Add up all of the squares 5. Divide the final sum by the original mean.
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