Question

Distinguish between Frequency polygon and Frequency curve.

Answer 1

Whereas frequency curve is a curvethat is obtained by joining the top midpoints of all rectangles of a histogram using a free hand. The onlydifference between a frequency curveand a frequency polygon is that:Frequency polygon is drawn by joining points by a straight line. Frequency curve is drawn by a smooth hand.

Answer 2

Frequency polygon is drawn by a straight line joining points, while a smooth hand draws the frequency curve. When the polygon frequency is smoothed out, it is referred to as the frequency curve.

• A frequency curve is a smooth curve that corresponds to the limiting case of a histogram calculated as the number of data points becomes very large for a frequency distribution of a continuous distribution.
• A polygon frequency is a graph constructed using lines to connect the midpoints of each interval, where the point heights are the frequencies. A frequency polygon can be created from the histogram or from the frequency distribution table by calculating the midpoints of the bins.