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Question

When constructing frequency polygon, must be calculated.

A
Cumulative frequency
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B
Average of frequency
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C
Median of frequency
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D
Class Marks
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Solution

The correct option is D Class Marks
A frequency polygon is the graphical representation of both discrete and continuous frequency distributions.

It is not necessary to construct a histogram first, and then the frequency polygon.

To construct the frequancy polygon:
First, the class marks need to be calculated, then they are taken on the X-axis and the corresponding frequency on the Y-axis
Suitable scales are to be taken before plotting the data.

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