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Professor Vasquez gave a quiz to two classes. Was the range

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Professor Vasquez gave a quiz to two classes. Was the range [#permalink]

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New post 15 Oct 2008, 17:08
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A
B
C
D
E

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Professor Vasquez gave a quiz to two classes. Was the range of scores fro the first class equal to the range of scores for the second class?
(1) In each class, the number of students taking the quiz was 26, and the lowest score in each class was 70.
(2) IN each class, the average (arithmetic mean) score on the quiz was 85

I got this one wrong..did it in a hurry

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Re: DS-avges [#permalink]

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New post 15 Oct 2008, 17:19
I have a feeling I could be wrong, but I would go with E

a. No information about highest score
b. Not Sufficient

Together
No information about highest score. Just because mean is the same, does not mean that scores are the same.

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Re: DS-avges [#permalink]

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New post 15 Oct 2008, 21:16
fresinha12 wrote:
Professor Vasquez gave a quiz to two classes. Was the range of scores fro the first class equal to the range of scores for the second class?

(1) In each class, the number of students taking the quiz was 26, and the lowest score in each class was 70.
(2) IN each class, the average (arithmetic mean) score on the quiz was 85

I got this one wrong..did it in a hurry


1: nothing about the highest score in each class. nsf..
2: average doesnot much about the range. the highest score could vary with same mean.

togather also not sufficient as the highest score could be anything having the same meana nd lowest score.

E should be it.
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Re: DS-avges [#permalink]

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New post 15 Oct 2008, 21:57
i got E too

thought I was missing a trick somewhere

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Re: DS-avges   [#permalink] 15 Oct 2008, 21:57
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Professor Vasquez gave a quiz to two classes. Was the range

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