Question: Please answer the question by using excel and show the formula. Thanks 7. You have been asked to analyze the standard deviation of a portfolio

Please answer the question by using excel and show the formula.

Please answer the question by using excel and show the formula. Thanks

7. You have been asked to analyze the standard deviation of a portfolio composed of the following three assets: Investment Sony Corporation Tesoro Petroleum Storage Technology Standard Expected return (%) deviation (%) 11 23 9 27 16 50 1 You have also been provided with the correlations across these three investments: Tesoro Sony Tesoro Storage Tech Sony 1.00 -0.15 0.20 -0.15 1.00 -0.25 Storage Tech 0.20 -0.25 1.00 Estimate the variance of a portfolio, equally weighted across all three assets

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