Please Answer The Question And Write Down The Solution Step By Step Thank You Su

Please answer the question and write down the solution step by step. Thank you!

 Suppose that you have a sample of 500 observations on two random variables: price denoted as X, and profit, denoted as Y. So you observe {xi, yi} for i=1,…500. Write down the formula for sample mean and sample variance of X and Y as well as the sample covariance between X and Y

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