Covariance measures whether or not two random variables vary in the same way. It is the average of the products of deviations for each non-null data point pair.
Note that high covariance does not imply a causal relationship between the variables.
Covariance measures whether or not two random variables vary in the same way. It is the average of the products of deviations for each non-null data point pair.
Note that high covariance does not imply a causal relationship between the variables.