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Question Nos. 59 and 70 in Official Quant Guide

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Nauman
 Post subject: Question Nos. 59 and 70 in Official Quant Guide
 Post Posted: Fri Sep 05, 2008 3:20 pm 
Can anybody explain the difference of logic behind in Question Nos. 59 and 70 in the Official Quant Guide?

Q 59 asks for the value of "exactly 2 standard deviation less than mean" and calculates it as: " [mean - 2 standard devistion]", while Q 70 asks for "value more than 2.5 standard deviation from the mean" and calculates it as in the range: "[mean - 2.5 standard devistion] and [mean + 2.5 standard devistion]. Why the range in Q 70 not in Q 59?

Nauman
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Responder
 Post subject: Response:
 Post Posted: Fri Sep 05, 2008 5:42 pm 
On the number line, "Less" means number on the left (only 1 direction); whereas away is more like the |x| (absolute operator) which means on wither sides.
Hope this answers your question.
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Nauman
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 Post Posted: Sun Sep 07, 2008 1:42 pm 
Thanks. I got it.
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