- CFA Exams
- CFA Level I Exam
- Topic 1. Quantitative Methods
- Learning Module 4. Common Probability Distributions
- Subject 11. Student's t-, Chi-Square, and F-Distributions

###
**CFA Practice Question**

Which of the following statements is incorrect?

B. Chi-square random variables can only be positive.

C. The chi-square distribution is defined by a single parameter.

A. The chi-square distribution is symmetrical just like the normal distribution.

B. Chi-square random variables can only be positive.

C. The chi-square distribution is defined by a single parameter.

Correct Answer: A

The statement that the chi-square distribution is symmetrical just like the normal distribution is incorrect. The chi-square distribution is not symmetrical; it is skewed. All other statements are correct.

###
**User Contributed Comments**
4

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

surob |
Can someone explain the answer C? How is it correct? |

tabulator |
It is defined by its degrees of freedom only. Just like a t-distribution. |

bundy |
It is defined by the variance a single parameter |

praj24 |
Variance of a single, normally distributed population - Chi-sqaure equality of variance of two independent, normally distributed populations - F stat |