Three portfolios are created using shares of Stock A and Stock B. The table below provides the proportional value of the two stocks in each portfolio, as well as the volatility of each portfolio. Find the correlation between the returns of Stock A and Stock B. Proportion of A Proportion of B Volatility Portfolio 1 40% 60% 31.65% Portfolio 2 20% 80% 26.17% Portfolio 3 70% 30% 42.17%

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