- CFA Exams
- CFA Level I Exam
- Topic 1. Quantitative Methods
- Learning Module 7. Estimation and Inference
- Subject 1. Sampling Methods
CFA Practice Question
Of the following statements:
II. In a simple random sample, each item in the sample has the same probability of being sampled.
I. In a stratified random sample, each item in the sample has the same probability of being sampled.
II. In a simple random sample, each item in the sample has the same probability of being sampled.
A. Only I is true.
B. Only II is true.
C. I and II are true.
User Contributed Comments 3
| User | Comment |
|---|---|
| danlan | In stratified random sample, items are groups to represent each group of interest, so each item may have different probability of being sampled. |
| Jurrens | to expand on danlan: Every group may have different number of members, ie, one group has 5 and the other has 2. If one member from each group is chosen, the group with 2 has a much beeter chance of being selected. |
| renataa | Thanks Jurrens, very helpful |