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Question -

The monthly profits (in Rs.) of 100 shops are distributed as follows:
 
Draw the frequency polygon for it.



Answer -


Represent profits per shop along x-axis and no. of shop (c.f.) along y-axis.
Plot the points (50, 12), (100, 30), (150, 57), (200, 77), (250, 94) and (300, 100) on the graph and join them with ruler. This is the cumulative polygon as shown.

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