- Returns on stocks X and Y are listed below: Period    1    2    3    4    5    6    7 Stock X    3%    -2%    9%    6%    -1%    -4%    11% Stock Y    1%    -4%    7%    12%    3%    -2%    -1% Consider a portfolio of 20% stock X and 80% stock Y. What is the (population) variance of portfolio returns? Please round your answer to six decimal places.

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