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October 31, 2014

October 31, 2014

Posted by **Lea** on Wednesday, March 13, 2013 at 11:24am.

92, 97, 53, 90, 95, 98

- Algebra 2 -
**PsyDAG**, Wednesday, March 13, 2013 at 12:19pmFind 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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