When a database eliminates companies that cease to exist because of a merger or bankruptcy, this can result in:
A.正确答案Clook-ahead bias.
B.back-testing bias.
C.survivorship bias.
When a database eliminates companies that cease to exist because of a merger or bankruptcy, this can result in:
A.正确答案Clook-ahead bias.
B.back-testing bias.
C.survivorship bias.
