CFA Level 1: Relative Frequency Calculation

Relative Frequency in Frequency Class 150-175

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Question

A statistician is working with the following dataset:

129, 162, 159, 192, 142, 195, 203, 177, 138, 187, 149, 123, 146, 169, 162, 191, 155, 146, 176, 182, 174, 190, 168.

The relative frequency in the frequency class 150-175 equals ________.

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Explanations

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A

There are 23 observations. Of these, 7 lie in the 150-175 class. relative frequency = class frequency/total # of observations

= 7/23 = 0.30

Remember that relative frequency is always a number between zero and one.

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