Statistics, Machine Learning, Data Science, Artificial Intelligence, Deep Learning.
covariance can be written as follows: Covariance between a random variable and constant is always ZERO! Cov( X, Y) is as same as Cov(Y, X) Drawbacks of using Covariance When we say that the covariance between two random variables is +ve or -ve but we cannot gives the answer to How much positive? or