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A and B are taxes collected of 12 months, is median of A

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mba4me
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A and B are taxes collected of 12 months, is median of A [#permalink] New post   13 Sep 2004, 12:56
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A
B
C
D
E

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A and B are taxes collected of 12 months, is median of A greater than that of B?

1) Average value of A is greater than that of B.

2)Sandard deviation of A is greater than that of B.



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Re: A and B are taxes collected of 12 months, is median of A [#permalink] New post   13 Sep 2004, 13:43
E.

1) Insufficient. Average of A can be higher while the meadian lower.
2) Insufficient. We won't be able to predict meadian using standard deviation.
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Re: A and B are taxes collected of 12 months, is median of A [#permalink] New post   13 Sep 2004, 13:44
I would guess E.

I did not calculate anything but made a little drawing with some numbers.
I believe that we cannot answer the question because we don´t what the average of A and B is. It could be 20 and 10 but also 11 and 10.
With the standard deviation I think it is also not possible to know something about the spread.

Please correct me if I am wrong.

Regards,

Alex
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Re: A and B are taxes collected of 12 months, is median of A [#permalink] New post   14 Sep 2004, 06:52
Yes..It has to be E. Because either average or standard deviation can not give any picture about the median, which simply picks up the middle number in the sorted numbers.

mba4me wrote:
A and B are taxes collected of 12 months, is median of A greater than that of B?

1) Average value of A is greater than that of B.

2)Sandard deviation of A is greater than that of B.
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Re: A and B are taxes collected of 12 months, is median of A [#permalink] New post   21 Oct 2004, 13:06
here's how I got E on this one:

10 20 30 40 50
21 22 23 24 25
30 > 23

10 20 30 40 3000
100 101 102 103 104

30 < 102
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Re: A and B are taxes collected of 12 months, is median of A [#permalink] New post   21 Oct 2004, 14:07
A for example: 1, 1, 7 Average=3,median=1,std=sqrt((4+4+16)/2)=sqrt(13)
B for example: 1, 2, 3 Average=2,median=2,std=sqrt((1+0+1)/2)=sqrt(1)=1
answer is E...
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Re: A and B are taxes collected of 12 months, is median of A [#permalink] New post   22 Oct 2004, 09:25
Got E,

Neither statements gives us a median for A and B



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Re: A and B are taxes collected of 12 months, is median of A [#permalink]
22 Oct 2004, 09:25
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