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本文主要研究的是期望收益率与方差对组合投资收益的影响。文中利用期望收益率和方差对不确定的风险和收益进行了计算分析,正确的投资组合可以有效的降低风险,使风险分散,保证收益。
This paper mainly studies the effect of expected return and variance on portfolio investment returns. The paper uses the expected return and variance to calculate and analyze the uncertain risk and return. The correct investment portfolio can effectively reduce the risk, disperse the risk and ensure the return.