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银矿石2018-06-11 16:38:43
同学你好,你可以记住这个结论:
Given a series of historical returns, the arithmetic mean is statistically the best estimator of the next year’s return.
For estimating a compound return over more than one year, the geometric mean of the historical returns is the most appropriate estimator.
因为算术平均是一个简单的平均,而几何平均涉及复利的思想。这是它们的运算方式决定的。
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