两种股票组合:收益 Two-Security Portfolio: Return 资产组合的期望收益是资产组合中各种证券的 期望收益的加权平均值 The expected return on the portfolio is a weighted average of expected returns on the component securities with portfolio proportions as weights: E(rpEWDE(rD+WEE rE 8-108-10 资产组合的期望收益是资产组合中各种证券的 期望收益的加权平均值 The expected return on the portfolio is a weighted average of expected returns on the component securities with portfolio proportions as weights: E(rp)=WDE(rD)+WEE(rE) 两种股票组合：收益 Two-Security Portfolio: Return