‘What does covariance tell us’ In mathematics and Statistics, Covariance gives the directional relationship between the two variables. It means covariance tell us how one variable changes are associated with the second variable. Covariance can be calculated by analyzing the correlation between the two variables by each variable’s standard deviation.   The Covariance Formula The formula is: Cov(X,Y) = Σ …

What’s the most important thing you do after brushing up your teeth and exercise? Yes, it’s cleaning your body. With little effort, you can practice cleaning and make daily things manageable. The same goes for shotgun, pistols, and rifles. This is surely the most effortless and beautiful part of having a gun, the cleaning activity. Cleaning your gun becomes more …