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A large distribution of score is normally distributed Colum

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A large distribution of score is normally distributed Colum [#permalink] New post 16 Oct 2017, 08:42
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A large distribution of score is normally distributed

Quantity A
Quantity B
score that’s one standard deviation above the mean
score that has the 80th percentile



(A) The quantity in Column A is greater.
(B) The quantity in Column B is greater.
(C) The two quantities are equal.
(D) The relationship cannot be determined from the information given.


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[Reveal] Spoiler: OA
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Re: A large distribution of score is normally distributed Colum [#permalink] New post 16 Oct 2017, 09:32
The score one sd above the mean represents the 84th percentile because it keeps at its left half the distribution (50%) plus 34% that is the amount of individuals between the mean and the first sd.

Thus we have to compare the score corresponding to the 84th and 80th percentiles so that A is greater
Re: A large distribution of score is normally distributed Colum   [#permalink] 16 Oct 2017, 09:32
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A large distribution of score is normally distributed Colum

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