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Manager
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Joined: 04 Sep 2006
Posts: 117
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Kudos [?]: 9 [0], given: 0

SD [#permalink] New post 27 Jun 2009, 20:56
00:00
A
B
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D
E

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0% (00:00) correct 0% (00:00) wrong based on 0 sessions
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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Kudos [?]: 74 [0], given: 6

Re: SD [#permalink] New post 28 Jun 2009, 18:02
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, 18:02
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