问题
单项选择题
An analyst does research about security market indices. Which of the following indices is most likely subject to survivorship bias()
A. Fixed-income indices.
B. Hedge fund index.
C. Real estate investment trust index.
答案
参考答案:B
解析:
对冲基金指数是自愿进行业绩报告的,业绩不佳的对冲基金通常不报告其表现,使得它们的回报不包括在指数的计算当中,因此受到生存偏差(survivorship bias)的影响。固定收益指数和房地产投资信托指数都遵循比较严格的业绩披露规范,生存偏差的情况比较少。