Why are further post-hoc analysis required? I guess the question would be is what is correlation?
In: Mathematics
Correlation is a mutual relationship or connection between two or more things. Funny examples of correlation can be found on [https://www.tylervigen.com/spurious-correlations](https://www.tylervigen.com/spurious-correlations) .
However, you may notice that, even if there is a correlation (Both graphics are pretty similar), there isn’t a causation. This means, the decrease in the divorce rate in Maine didn’t cause the decrease in the consumption of margarine, even if both graphics are pretty similar (They can be found on the link above)
When we say that ” **Correlation isn’t equal to causation** “, we mean that the fact that two things are correlated, as seen before, doesn’t mean that one of them caused the other.
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