理性投资者只需在有效边界上选择证券组合是马柯威茨均值-方差模型的结论。()

2023-05-27

参考答案：错

马柯威茨分别用期望收益率和收益率的方差来衡量投资的预期收益水平和不确定性（风险），建立均值方差模型来阐述如何全盘考虑上进两个目标，从而进行决策。推导出的结果是，投资者应该通过同时购买多种证券而不是种证券进行分散化投资。

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