- 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 |