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statistical relation between two or more variables such that systematic changes in the value of one variable are accompanied by systematic changes in the other
'''Correlation''' is defined by dict.org as:
:a statistical relation between two or more variables such that systematic changes in the value of one variable are accompanied by systematic changes in the other [http://256.com/gray/thoughts/2004/20040511.html]
In other words, if you are studying two
==Correlation and causation==
==Correlation and causation==
"Correlation does not imply causation" is a phrase used in [[statistics]] to point out that a [[correlation]] between two variables should not imply that one variable has not caused a change in the other. It is a [[logical fallacy]] to assume that correlation implies causation.
"Correlation does not imply causation" is a phrase used in [[statistics]] to point out that a [[correlation]] between two variables should not imply that one variable has not caused a change in the other. It is a [[logical fallacy]] to assume that correlation implies causation.