- CFA Exams
- CFA Level I Exam
- Topic 1. Quantitative Methods
- Learning Module 7. Estimation and Inference
- Subject 1. Sampling Methods

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**CFA Practice Question**

Which of the following is (are) NOT true of simple random sampling?

II. Characteristics of a random sample may differ widely from characteristics of the population from which it is drawn.

III. A sample must be reasonably large to be considered a random sample.

IV. Every element in the population must be given an equal chance for inclusion in the sample.

I. Whether or not a sample is random cannot be told from inspection of the sample.

II. Characteristics of a random sample may differ widely from characteristics of the population from which it is drawn.

III. A sample must be reasonably large to be considered a random sample.

IV. Every element in the population must be given an equal chance for inclusion in the sample.

Correct Answer: III

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**User Contributed Comments**
4

User |
Comment |
---|---|

surob |
I thought the size of the sample matters from the randomness standpoint. Any thoughts? |

tabulator |
Randomness and size are not related. Randomness is the way you choose from the sample of any size. |

bahodir |
It is wrong because the statement should be "A sample must be reasonably large to be considered an unbiased sample" |

Gooner7 |
unbiased..thanks bahodir! |