CFA Practice Question

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CFA Practice Question

Which of the following is not a type of sample selection bias?

A. survivorship bias
B. look-ahead bias
C. time-period bias
D. collection bias
Correct Answer: D

Sample selection bias includes three types of bias: survivorship bias, look-ahead bias, and time-period bias. Collection bias is not a type of sample selection bias.

User Contributed Comments 2

User Comment
jpducros What is a collection bias ?
johntan1979 It's something that don't even exist.
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