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09 Dec 2016, 01:52
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Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
25%
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Question Stats:
63% (00:40) correct
37%
(00:43)
wrong
based on 156
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What is the standard deviation (d) of m, n, p?
1) m, n, and p are different
2) \(d^2-2d=0\)
1) m, n, and p are different
2) \(d^2-2d=0\)
09 Dec 2016, 03:40
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Statement 1 isn't enough as it just says three entities are different.
Statement 2 Can be enough if we derive d=2. Or another interpretation can be d=0 or d=2. If former is considered this is enough but in latter it's not.
Combining both of them, we know m,n,p are different hence d cannot be 0. Thus d=2.
Confused between (B) and (C)
Omkar Kamat
When The Going Gets Tough, The Tough Gets Going !!
Statement 2 Can be enough if we derive d=2. Or another interpretation can be d=0 or d=2. If former is considered this is enough but in latter it's not.
Combining both of them, we know m,n,p are different hence d cannot be 0. Thus d=2.
Confused between (B) and (C)
Omkar Kamat
When The Going Gets Tough, The Tough Gets Going !!
09 Dec 2016, 09:22
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Hemanth2017
Why not d=2 Directly from Statement 2 ?? Can you clear my confusion ??
Omkar Kamat
When The Going Gets Tough, The Tough Gets Going !!
