CFA Practice Question

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CFA Practice Question

A researcher has decided to create a frequency distribution using the following classes:

30-45, 45-60, 60-75, 76 & over

The selection of this set involves which of the following?

I. non-overlapping classes
II. open-ended classes
III. equal class intervals
Correct Answer: II

Note that "76 & over" is an open-ended class. Also, the classes are overlapping (e.g., the classes "30-45" and "45-60" have the point "45" in common).

User Contributed Comments 3

User Comment
viannie can't be of equal class because of 76 & over
mjwoulf If one open ended class = correct, why with 3 equal class intervals = incorrect?
jzty The class interval for 76 & over is different from any other interval.
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