i'd be really happy if someone could help me with this problem:
i'm trying to get the correlation between to var. X,Y.
So far i know:
I'd be really glad if someone could help me. I Have calculated the Expected values for X and Y, their Variance and the Standard deviation, however i can't seem to figure out how to calculate the joint expected value E(X,Y) so that i can calculate the corr using this formula: http://upload.wikimedia.org/math/2/0...dcdba91233.png
i'd be very happy if someone could help me or post some tips on how to solve this problem.
cheers and many txh in advance,