Construction of two frequency polygon in same axes

Construction of frequency polygon by using Histogram

Construction of frequency polygon without using Histogram.

What is frequency polygon ?

Construction of a frequency distribution

Construction of a frequency distribution

Consider the following statements pertaining to a frequency polygon of a frequency distribution of a continuous variable with seven class intervals of equal width: 1. The original frequency distribution can be reconstructed from the frequency polygon. 2. The frequency polygon touches the x-axis in its extreme right and extreme left. Which of the above statements is/are correct?

Weekly wages of 250 workers in a factory are given in the following table. Construct the histogram and frequency polygon on the same graph for the data given.

(i)Construct a histogram and frequency polygon of the following distribution : (ii)Show that the area under frequency polygon is equal to the area under histogram.