- CFA Exams
- CFA Level I Exam
- Topic 1. Quantitative Methods
- Learning Module 5. Sampling and Estimation
- Subject 7. Data Snooping Bias, Sample Selection Bias, Look-Ahead Bias, and Time-Period Bias
CFA Practice Question
Which of the following is not a type of sample selection bias?
B. look-ahead bias
C. time-period bias
D. collection 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. |