Because markets have a variety of uncertain, the precise value of the expected return of securities is undetermined.
由于市场上存在着各种各样的不确定性,对于证券的期望收益率,投资者难以给出一个精确的值。 区间数作为一类特殊的模糊数,是处理该类不确定性问题的有力工具。
参考来源 - 基于模糊区间的Minimax规则下的证券投资组合模型 (研究生论文)·2,447,543篇论文数据,部分数据来源于NoteExpress
r1 Asset 1 has expected return r1.
第一项资产的预期收益率是。
You'd have a higher expected return with no more variance.
你的预期收益率提高了,但风险没有增加。
This is the equation that relates the expected return on an asset.
这个等式是关于某一资产的预期收益。
After completing their studies, Sudanese students are expected to return home with the skills necessary to help deal with the complex causes of conflict in the country.
VOA: special.2009.01.28
That's got the lowest possible standard deviation of expected return and that's 25% stocks and 75% bonds with this sample period.
这个组合预期回报的标准差最小,在这一点上,投资组合,由25%的股票和75%的债券构成。
If you're comparing two portfolios with the same expected return, then you want the one with the lower variance.
比较两个有相同预期收益率的投资组合时,你会选择方差小的那一个。
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