Roger Ibbotson, who is a colleague of Bob Shiller's and mine at the School of Management, has done a fair amount of work, studying the relative importance of these sources of returns.
罗格·伊博森是,我和希勒在管理学院的同事,他在对回报率来源的研究上,做了大量的工作。
Roger Ibbotson took a look at a larger group of funds -3,500--funds over a ten-year period and found survivorship bias at 2.9% per year and backfill bias at 4.6% per year.
罗杰·伊博森研究了更大的样本组,3500支基金10年间的表现,算出其生存偏差是每年2.9%,回填偏差是每年4.6%
Roger Ibbotson, who is a colleague of Bob Shiller's and mine at the School of Management, has done a fair amount of work, studying the relative importance of these sources of returns.
罗格·伊博森是,我和希勒在管理学院的同事,他在对回报率来源的研究上,做了大量的工作
I went back and took a closer look at Roger Ibbotson's data and there are lots of examples that will illustrate this point, but the most dramatic occurs around the crash in October 1929.
我进一步查看了罗格·伊博森的数据,诸多例子都能说明这一点,但是印象最深刻的,发生于1929年10月的那次股灾
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