Here is the question: You are given the following for a sample of five observations from a bivariate distribution:
x(with a line on top) = 3.6, y(with a line on top) = 3.8
A is the covariance of the empirical distribution F(underscore e) as defined by these five observation.
B is the maximum possible covariance of an empirical distribution with identical marginal distributions to F(underscore e).
Determine B - A.
What does the line on top of a variable mean?