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February 28, 2015

February 28, 2015

Posted by **Teresa** on Wednesday, March 17, 2010 at 12:38pm.

- statistics -
**drwls**, Wednesday, March 17, 2010 at 12:51pmThe difference between the 48 and the 36 is 1.5 standard deviations. Thus

1.5 sigma = 12,

and sigma (the standard deviation) = 8

48 is one sigma above the mean, so the mean is 40.

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