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# Critical reasoning_correlation

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Director
Joined: 09 Aug 2017
Posts: 682

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24 Jan 2019, 01:32
Recently I read a argument in which it was said that-
More X, More y.

I was asked which must be true.
I chose-Less x, less y, considering the correlation.

Unfortunately I was wrong according to question.
Could you please tell me why I am wrong?
Manager
Joined: 29 Dec 2013
Posts: 74
GMAT 1: 770 Q48 V51

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07 Feb 2019, 13:59
Hi gvij2017

Could you post the text of the actual question? This could help us give you a precise answer.

But in general, do you know that more x actually causes more y? If not, and if this is just a correlation (not causation), then we can't make further inferences about it. We don't actually know that the change in x is the reason for the change in y. For example, it could be true that some other factor z is actually driving x and y, but x and y don't actually impact each other. So reducing the amount of x would not necessarily lead to reduced y ... only reduced z would do that.
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Re: Critical reasoning_correlation   [#permalink] 07 Feb 2019, 13:59
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