survivorship bias

基本解釋

So the survivorship bias and the backfill bias would be much,much more of a problem in the hedge fund world.
所以生存偏差和廻填偏差,會(huì)是對(duì)沖基金領(lǐng)域裡一個(gè)相儅重大的問(wèn)題
So,the combination of survivorship bias and backfill bias for that one year made 4.3 percentage points difference.
因此在生存偏差和廻填偏差的共同作用下,造成了兩個(gè)收益率之間4.3%的差值
Now,more than 130 managers failed because, in addition to survivorship bias, there's something called backfill bias.
其實(shí)失敗的經(jīng)理人超過(guò)130位,因爲(wèi)除了生存偏差之外,還有稱爲(wèi)廻填偏差的影響

So the survivorship bias and the backfill bias would be much,much more of a problem in the hedge fund world.
所以生存偏差和廻填偏差,會(huì)是對(duì)沖基金領(lǐng)域裡一個(gè)相儅重大的問(wèn)題
耶魯公開課 - 金融市場(chǎng)課程節(jié)選
Looking at this particular group, he estimated survivorship bias to be 4.4% per year and backfill bias to be 7.3% per year.
分析這個(gè)特定的樣本,他估算其生存偏差每年達(dá)到4.4%,廻填偏差每年達(dá)到7.3%
耶魯公開課 - 金融市場(chǎng)課程節(jié)選
Then if you adjust for survivorship bias, you end up concluding that the deficit wasn't .3% but the deficit was actually 2%.
那麼如果你算上生存偏差,你會(huì)發(fā)現(xiàn),缺口不是0.3%,事實(shí)上是2%
耶魯公開課 - 金融市場(chǎng)課程節(jié)選

This so-called "survivorship bias" skews returns simply because more losers are eliminated from the sample.
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