# Difference between "correlation" and "related".

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#1
Despite thoroughly researching both types of experimental design, I am still lost when it comes to applying which one of these to an example experiment. They then both seem to fit the experiments or neither quite fits right. Thanks for the help and sorry if this is a stupid question.
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2 years ago
#2
Correlation is objective and relation is subjective. Correlation is the statistical relationship between two variables, whereas saying their related is how you conclude upon that link, i.e. positive/negative correlation means they are related, but no correlations means no relationship.
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2 years ago
#3
In psychology, for experimental design problem questions we have been taught that if it is correlation then the scenario will say that they are looking for a test of association or correlation. Whereas if it is relate, the scenario will say that they are looking for a test of difference, related being either matched pairs or repeated measures and unrelated being independent groups. Hope this helps
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2 years ago
#4
(Original post by XTO4STX)
Despite thoroughly researching both types of experimental design, I am still lost when it comes to applying which one of these to an example experiment. They then both seem to fit the experiments or neither quite fits right. Thanks for the help and sorry if this is a stupid question.
Just because something correlates doesn't mean it is related:

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2 years ago
#5
(Original post by Doonesbury)
Just because something correlates doesn't mean it is related:

A fine example.
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2 years ago
#6
(Original post by DrDanB)
A fine example.

(Plenty more here: http://tylervigen.com/spurious-correlations including more cheese ones )

Attachment 788080
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#7
(Original post by DrDanB)
Correlation is objective and relation is subjective. Correlation is the statistical relationship between two variables, whereas saying their related is how you conclude upon that link, i.e. positive/negative correlation means they are related, but no correlations means no relationship.
Thanks, that's a lot simpler than my teachers explained it.
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#8
(Original post by Doonesbury)

(Plenty more here: http://tylervigen.com/spurious-correlations including more cheese ones )

Attachment 788080
Thanks thats a creative way to show the difference XD
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#9
(Original post by Dani_pidgeon)
In psychology, for experimental design problem questions we have been taught that if it is correlation then the scenario will say that they are looking for a test of association or correlation. Whereas if it is relate, the scenario will say that they are looking for a test of difference, related being either matched pairs or repeated measures and unrelated being independent groups. Hope this helps
Thanks, that was actually incredibly specific to the practice question I am stuck on, wording and everything!
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2 years ago
#10
No problem, I find that once you have that basic bit of knowledge it can be used for so many questions!
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