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March 30, 2015

March 30, 2015

Posted by **rita** on Sunday, June 9, 2013 at 5:35pm.

- statistics -
**Kuai**, Sunday, June 9, 2013 at 7:35pmMean = sum/n

5 = sum/7

5(7) = 7(sum/7)

35 = sum

35 to 42

42-35 = 7

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