Statistics, Statistical Analysis, Random Variable, Discrete Random Variable, Mathematics.
variable. Then, Y =(X − E[X])/SD(X) is a standardised random variable. Covariance Suppose X and Y are random variables on the same probability space. The covariance of X and Y , denoted as Cov(X, Y ), is defined as Cov(X, Y ) = E[(X − E[X])(Y − E[Y ])] Properties of Covariance Cov(X,X)= Var(X)