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PS: SD Difficult one

Expert replies
Source: — Problem Solving |

by Morgoth » Fri Sep 26, 2008 1:37 pm
IMO E, none

SD can never be negative.

SD can only be 0 if all the values in the set are same.

Thus, E.

OA?
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by stop@800 » Fri Sep 26, 2008 1:40 pm
Great.

Thanks you very much.

I did not looked at answer choices, I was just looking at question stem and thinking how to solve. :)
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