How to Draw Frequency Polygon of Unequal Class Intervals

Muhammad Safi Ur Rehman @Muhammad-Safi-Ur-Rehman

01 January 1970 0 4K Report

How to draw frequency polygon for class intervals having unequal size? For example how to draw frequency polygon for the following data:

Classes: 0–39 40–49 50–79 80–99

Frequencies: 8 8 10 4

I have attached my attempt to solve this question, kindly discuss it further. Thanks

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