- CFA Exams
- 2021 CFA Level I Exam
- Study Session 3. Quantitative Methods (2)
- Reading 9. Common Probability Distributions
- Subject 8. The Standard Normal Distribution

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**CFA Practice Question**

For a set of data with mean 70 and standard deviation 10, the z-score for 62 is ______.

B. -0.8

C. -8

A. 0.8

B. -0.8

C. -8

Correct Answer: B

The z-score for a piece of data is z = (score - mean)/std dev. For an x-score of 62, we have z = (62 - 70)/10 = -0.8. So, 62 has a z-score of -0.8.

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