That means--his calculations are very different than the ones I have because he has a much longer sample period.

那表明。。。他的计算结果与我的大相径庭,因为它数据的取样跨度比我的长多了。

耶鲁公开课 - 金融市场课程节选

He looked at a group of hedge funds that numbered 331 in 1996 and by 2004,eight years later, 75% of them had disappeared.

他取样了一组对冲基金,是1996年的331支,到8年后的2004年,其中的75%都消失了

耶鲁公开课 - 金融市场课程节选

That's what I got using this sample period.

这就是用这个取样期间的数据得出的结果。

耶鲁公开课 - 金融市场课程节选