GMAT Prep CR question that is hard - Table attached : GMAT Critical Reasoning (CR)
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GMAT Prep CR question that is hard - Table attached

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GMAT Prep CR question that is hard - Table attached [#permalink]

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New post 13 Apr 2012, 04:57
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A
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E

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the answers are marked with a box outside of the button.
my problem is with the second question (the negative correlation)
[Reveal] Spoiler: OA

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Re: GMAT Prep CR question that is hard - Table attached [#permalink]

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New post 13 Apr 2012, 06:30
ronr34 wrote:
the answers are marked with a box outside of the button.
my problem is with the second question (the negative correlation)


It does take time, but the answr for 3 questions are

TRUE
FALSE
FALSE
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Re: GMAT Prep CR question that is hard - Table attached [#permalink]

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New post 13 Apr 2012, 06:30
ronr34 wrote:
the answers are marked with a box outside of the button.
my problem is with the second question (the negative correlation)


Negative correlation means inversly proportional... like if one is increasing the other should decrease..and vise-versa
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Re: GMAT Prep CR question that is hard - Table attached [#permalink]

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New post 13 Apr 2012, 07:31
yes that was what i expected.
but I was incorrect according to GMAT Prep.
they answered
true
true
false

does anyone have an explanation?
or could it be that i found a mistake in their program?
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Re: GMAT Prep CR question that is hard - Table attached [#permalink]

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New post 14 Apr 2012, 14:06
I agree with harshavmrg... in this problem the number of self-check unlimited lanes increases as the average customer age decreases, hense negative correlation. hope this this helps.
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Re: GMAT Prep CR question that is hard - Table attached [#permalink]

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New post 14 Apr 2012, 14:15
Sorry I don't see it.
take a look at the number of unlimited:4
the number stays the same but the age changes.

or take a look at the number 3.56.
between 3.56 and 4 we have a rise in the number of isles but also a rise in the age.

unless you mean that for every same number of isles we calculate a separate age average
and then compare...?
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Re: GMAT Prep CR question that is hard - Table attached [#permalink]

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New post 14 Apr 2012, 14:28
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this inversly proportional relationship has to apply to most of the cases in order to be called negatively correlated, but does not have to be in 100% cases (unless they meant perfect negative correlation, but they didn't ask for that)...
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Re: GMAT Prep CR question that is hard - Table attached [#permalink]

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New post 14 Apr 2012, 15:05
great thanks!

I was thinking that the case was that it didn't have to be
100% but it seemed a bit odd to me.
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Re: GMAT Prep CR question that is hard - Table attached [#permalink]

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New post 20 Oct 2012, 05:34
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Hi, in practical terms, the negative corelation is mostly calculated by drawing a grafh of two values. so, if u draw a graph here you can see a trend in the graph for negative corelation. there may be 1 or 2 values going here and there(not following the trend), but as long as you can see that trend it shows the corelation is present. you can refer to IR guide by gmat pill(free download) as it explains the corelation concept.
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Re: GMAT Prep CR question that is hard - Table attached [#permalink]

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New post 20 Oct 2012, 06:25
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Re: GMAT Prep CR question that is hard - Table attached [#permalink]

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New post 25 Sep 2016, 09:57
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Re: GMAT Prep CR question that is hard - Table attached   [#permalink] 25 Sep 2016, 09:57
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