... 气体试样;gas sample 样本标准差;standard deviation of sample 国际实物标准样本;master international sample ...
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standard deviation of sample mean 均值的标准偏差
standard deviation of sample means 均数标准差
·2,447,543篇论文数据,部分数据来源于NoteExpress
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。
耶鲁公开课 - 金融市场课程节选
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