frr07172018-04-17 14:32:52
老师您好, 这个观点: "Compared with the geometric mean return, the arithmetic mean return is consistent with the assumptions of single period models, such as the CAPM." 答案的解释是: The arithmetic mean return as the average one-period return best represents the mean return in a single period. The major finance models for estimating required return—in particular the CAPM and multifactor models—are single-period models, so the arithmetic mean, with its focus on single-period returns, appears to be a model-consistent choice. 请您解释下, 谢谢!
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金程教育Alfred2018-04-17 15:34:06
同学你好,因为几何平均收益率计算的是多期连续投资的平均收益率,但算数平均都是把每一期都当作独立的投资计算的平均收益率 。所以算数平均更适合有单期假设的模型
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怎么看得出capm是单期模型?
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这个是capm的假设条件之一
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单期在这里是指?
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就比如0时刻开始,1时刻结束,就是单期。
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