- CFA Exams
- 2021 CFA Level I Exam
- Study Session 2. Quantitative Methods (1)
- Reading 7. Statistical Concepts and Market Returns
- Subject 6. Measures of Dispersion

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**CFA Practice Question**

The standard deviation of a group of scores is 10. If 5 were subtracted from each score, the standard deviation of the new scores would be ______.

B. 5

C. 10

A. 2

B. 5

C. 10

Correct Answer: C

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**User Contributed Comments**
2

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

cbb1 |
If all scores are reduced by 5, the median number would be lower by 5, but the degree of variability measured by standard deviation is unchanged. |

chipster |
thx!! |