NO.PZ2015120604000126
问题如下：
Which of the following statements refers to survivorship bias?
选项：
A.Use data of stratified equity sampling.
B.Use point estimation method instead of interval estimation method
C.Use historical data of hedgel fund performance.
解释：
C is correct.
In the study of hedge fund performance, survivorship bias is most likely to occur because only funds with better performance remain alive.
在对冲基金业绩的研究中，幸存者偏差最有可能发生，因为只有表现更好的基金才能存活下来。
但对冲基金的历史数据，不一定就表明他是剩下的数据呀。那就像老师举的例子，我取前十年、前9年的数据，每次都是历史数据，那怎么能说是活着的对冲基金呢？
