Q & A: How to calculate the covariance?

Ask Jeff Street : How to calculate the covariance I have the following information: the probability - Stock X - Y voorraad0.1 - (-50) - (100) .3 - 20 to 50.4 - 100 - 130.2 to 150 - 200wat is the covariance of stock x and y is in stock? Reply Reply to purchase songs Check out the first formula of the link. Here are the steps: 1) Calculate the expected values ​​of X and Y. This is a self-weighted averages of each of four data points. Think of it as two separate four data points and calculate the weighted average of all

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