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Please could you help to calculate weighted covariance matrix with this data, and show how did you calculated it (preferably with Excel functions), ASAP. Thank

Please could you help to calculate weighted covariance matrix with this data, and show how did you calculated it (preferably with Excel functions), ASAP. Thank you!

w1 w2 w3 w4 w5
Covariance 0.03 0.27 0.25 0.2 0.25
w1 0.03 AXP 0.00816 0.00259 0.00339 0.00154 0.00272
w2 0.27 3M 0.00335 0.00184 0.00081 0.00164
w3 0.25 GS 0.00832 0.00122 0.00218
w4 0.2 McD 0.00307 0.00156
w5 0.25 Nike 0.00579
sum 1.0000

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