If the covariance of two random variable X and Y is μXY, their correlation coefficient ρXY is:
1
In μXY
2
\(ln\;\left( {\frac{{{\mu _{XY}}}}{{{\sigma _X}{\sigma _Y}}}} \right)\)
3
\(\frac{{{\sigma _X}{\sigma _Y}}}{{{\mu _{XY}}}}\)
4
\(\frac{{{\mu _{XY}}}}{{{\sigma _X}{\sigma _Y}}}\)