Question

How can a normal frequency distribution be converted into cumulative frequency distribution? Clarify with the help of an example.

Answer 1

Explanation:

A frequency-curve is a smooth curve for which the total area is taken to be unity. It is a limiting form of a histogram or frequency polygon. The frequency-curve for a distribution can be obtained by drawing a smooth and free hand curve through the mid-points of the upper sides of the rectangles forming the histogram.