﻿ Definition and examples frequency polygon | define frequency polygon - Statistics - Free Math Dictionary Online

# Frequency Polygon

## Definition of Frequency Polygon

In a Frequency Polygon, a line graph is drawn by joining all the midpoints of the top of the bars of a histogram.

• A frequency polygon gives the idea about the shape of the data distribution.
• The two end points of a frequency polygon always lie on the x-axis.

### Example of Frequency Polygon

The frequency polygon shown above represents the number of vehicles that passes through a particular route in different hours. To draw the above diagram first a histogram is drawn and then a line graph is drawn through the midpoints of the top of the bars.

A. Figure 1
B. Figure 2
C. Figure 3
D. Figure 4

### Solution:

Step 1: The heights of the bars in the histograms indicate the number of hours that the students of a class spend.
Step 2: Observe the heights of the bars in the histograms to match with the given values.
Step 3: Compute the midpoints of the bars and draw the lines along these midpoints.
Step 4: Frequency polygon of this data will be as follows.
Step 5: So, Figure 1 represents the frequency polygon for the given data.

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