Distinguish Between Frequency Polygon and Frequency Curve.

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Solution

A frequency polygon is a closed figure that is formed by joining the top midpoints of all the rectangles of histograms using a straight line.
Whereas frequency curve is a curve that is obtained by joining the top midpoints of all rectangles of a histogram using a free hand.

The only difference between a frequency curve and a frequency polygon is that:
Frequency polygon is drawn by joining points by a straight line.
Frequency curve is drawn by a smooth hand.
When frequency polygon is smoothed out then it is known as frequency curve.

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Graphic location of mode is done with reference to:

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