GMATPREP Standard Deviation

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cveluswamy
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Posted: Sat Aug 04, 2007 12:03 pm Post subject: GMATPREP Standard Deviation

Can some one explain this. Thanks

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jayhawk2001
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Location: Silicon valley, California

Posted: Sat Aug 04, 2007 3:04 pm Post subject:

2.5 standard deviations = 2.5 * 3 = 7.5 2.5 standard deviations from the mean is either < 12.5 or > 27.5 Only 12 fits the bill

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