How to Draw Frequency Polygon?

Following the procedures listed below, construct a histogram before beginning to draw frequency polygons:

  • Step 1: First, select the class interval and then indicate the values on the axes.
  • Step 2: Label the horizontal axes with the midpoint of each interval.
  • Step 3: Label the vertical axes with the class frequency.
  • Step 4: Mark a point at the height in the centre of each class interval according to the frequency of each class interval.
  • Step 5: Use the line segment to join these spots.
  • Step 6: The representation that was obtained is a frequency polygon.

Frequency Polygons in Statistics

Frequency Polygons in Statistics: A frequency polygon is a type of line graph where the frequencies of classes are plotted against their midpoints. This graphical representation closely resembles a histogram and is typically used for comparing data sets or showing cumulative frequency distributions. It uses a line graph to represent quantitative data.

Frequency polygons are one of the great methods to represent statistical data so that it can be read easily. In statistics, we deal with lots of data, and reading it quickly is necessary for solving statistical problems effectively.

Frequency polygons help us to achieve the same result. In this article, we will learn about frequency polygons, their formula, examples, and others in detail.

Frequency Polygons

Table of Content

  • What is a Frequency Polygon in Statistics?
  • Frequency Polygon Graph
  • Cumulative Frequency Polygon
  • How to Draw Frequency Polygon?
  • Histogram and Frequency Polygons
  • Frequency Polygons Examples
  • Frequency Polygons Are Used For – Applications

Similar Reads

What is a Frequency Polygon in Statistics?

A visual representation of the frequency distribution of continuous data is the frequency polygon. Karl Pearson, an English statistician, made the initial presentation of it in the late 19th century. Based on the research of earlier statisticians like Francis Galton and Adolphe Quetelet, he put forth the idea. Its value comes from its capacity to graphically portray data, making understanding and analysis easier. They, therefore, serve as an important tool in statistics, assisting researchers in finding patterns and trends in huge data sets....

Frequency Polygon Graph

Frequency Polygon Graph is the graphical representation of the data given in the form of class interval and frequency. Let’s consider an example for better understanding:...

Cumulative Frequency Polygon

In statistics, the cumulative frequencies of a dataset are shown graphically using cumulative frequency polygons. The dots at the upper-class borders are plotted against the corresponding cumulative frequencies to create the graph. The graph illustrates the visual accumulation of data across time or intervals. The polygon created by the line connecting the points aids in the visualization of the data’s trends and patterns....

How to Draw Frequency Polygon?

Following the procedures listed below, construct a histogram before beginning to draw frequency polygons:...

Histogram and Frequency Polygons

The difference between the frequency polygon and histogram is discussed in the table below:...

Frequency Polygons Examples

Example 1: The frequency data below was used to create a frequency polygon....

Frequency Polygons Are Used For – Applications

Here are some of the key applications of frequency polygons:...

Summary – Frequency Polygons in Statistics

Frequency polygons are graphical tools used in statistics to represent the distribution of data points. They are essentially line graphs that plot class frequencies against class midpoints, making them very similar to histograms but offering a clearer visual comparison between multiple datasets. These graphs are particularly valuable for analyzing trends, comparing distributions, and identifying characteristics such as skewness and kurtosis in the data. By providing a visual summary of data, frequency polygons serve as an effective educational tool to enhance understanding of statistical distributions and are useful in diverse applications from business analytics to academic research....

FAQs on Frequency Polygons in Statistics

What is Frequency Polygon?...