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Standard Deviation

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Re: Standard Deviation

by r_walid » Wed Jan 21, 2009 2:36 pm
GMATPR wrote:Which of the following distribution of numbers has the greatest standard deviation?

A. {-3,1,2}
B. {-2,-1,1,2}
C. {3,5,7}
D. {-1,2,3,4}
E. {0,2,4}

(A). this is because -3 to 1 has 4 units separating them while all others have a smaller gap between them.
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