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SD

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Joined: 04 Sep 2006
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27 Jun 2009, 21:56
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In which range does the deviation of 11, 10, 10, 10, 12, and 12 fall?
0-3, 6-9, 9-10, 10-11, 11-12
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Joined: 25 Mar 2009
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28 Jun 2009, 19:02
Well if I'm understanding the question correctly, the 6 numbers you listed are the deviations of each observation from the mean. SD is the average of those deviations. So

(11 + 10 + 10 + 10 + 12 + 12)/6 = 10.83

So D) 10-11?
Re: SD   [#permalink] 28 Jun 2009, 19:02
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