What Does It Mean When Two Variables Are Independent. The mean and variance of the combination can be found from the means and the variances of the original variables. In general random variables may be uncorrelated but statistically dependent.
Dependent Independent Variables Equation Algebra Video Khan Academy from www.khanacademy.org
To see this write the expectation of their product. In other words if X and Y are independent we can write. Yes definitely if the two random variable is independent then the covariance is zero.
It is called independent because its value does not depend on and is not affected by the state of any other variable in the experiment.
The independence between two random variables is also called statistical independence. Yes definitely if the two random variable is independent then the covariance is zero. Two categorical variables are said to be independent if the conditional distributions on one variable are identical for every category of the other variable. There are two key variables in every experiment.
