- CFA Exams
- 2021 CFA Level I Exam
- Study Session 3. Quantitative Methods (2)
- Reading 11. Hypothesis Testing
- Subject 12. Hypothesis Tests Concerning Differences between Variances

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**CFA Practice Question**

Which of the following statements is correct?

B. The F-distribution is defined by three parameters.

C. The two samples used in the F-test must have the same size.

A. Just like the chi-square distribution, the F-distribution is skewed.

B. The F-distribution is defined by three parameters.

C. The two samples used in the F-test must have the same size.

Correct Answer: A

Just like the chi-square distribution, the F-distribution is skewed. This statement is correct; all other statements are incorrect. The F-distribution is defined by two parameters: the numerator and the denominator degrees of freedom. The sample size of the two samples does not have to be equal.

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