- CFA Exams
- CFA Level I Exam
- Study Session 2. Quantitative Methods (1)
- Reading 7. Statistical Concepts and Market Returns
- Subject 3. Frequency Distributions

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**CFA Practice Question**

A data set of 105 observations is organized in a relative frequency distribution into 9 classes. The sum of the relative frequencies across all the classes equals ______.

A. 1

B. 100

C. 105

**Explanation:**Relative class frequencies are percentages and across all classes, they must sum up to 100%, which is the same as summing up to 1.00.

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**User Contributed Comments**
7

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

surob |
Got it wrong because I chose answer B thinking that it is %. Be careful |

BullsEye |
I did the same mistake. Tricky |

aakash1108 |
very! |

shiva5555 |
I saw the trick but couldn't decide which way they were trying to trick us. ahhhhhhhhhhhhhhhh |

bantoo |
I committed the same mistake!!!!! |

abs013 |
Tricky |

gyee2012 |
I got fooled Lol... I ended up trying to figure out with log when I should of read " sum of the relative frequency" should = 1 |