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July 28, 2015

Homework Help: stats:find the mean

Posted by sha on Saturday, May 15, 2010 at 4:32pm.

please help! i know exactly how to find the mean but i am having a problem finding the midpoints. couldn't get them right :(

salary employees
5,001- 10,000 == 16
10,001-15,000 == 15
15001-20,000 == 11
20,001-25,000 == 15
25,001-30,000 == 23

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