Let's assume that we have data of two variables (X and Y) for 14 different people.

We can find the correlation between those two variables, for each one. In my case i find moderate correlation in some of them (which is also stat. significant), and for some other i don't (and it appears to be statistical insignificant).

Is there a way to extract a result about the correlation for the general population using something as multiple correlation or something like that?