What does a frequency polygon represent?
What does a frequency polygon represent?
A frequency polygon is a visual representation of a distribution. The visualization tool is used to understand the shape of a distribution. Essentially, the frequency polygon indicates the number of occurrences for each distinct class in the dataset.
How does frequency polygon look like?
A frequency polygon is very similar to a histogram. In fact, they are almost identical except that frequency polygons can be used to compare sets of data or to display a cumulative frequency distribution. In addition, histograms tend to be rectangles while a frequency polygon resembles a line graph.
How do you graph a frequency polygon?
Steps to Draw a Frequency Polygon
- Mark all the class marks on the horizontal axis. It is also known as the mid-value of every class.
- Corresponding to each class mark, plot the frequency as given to you.
- Join all the plotted points using a line segment.
- This resulting curve is called the frequency polygon.
How do you make a polygon graph?
What is frequency polygon and frequency curve?
A frequency polygon is a closed figure that is formed by joining the top midpoints of all the rectangles of histograms using a straight line. Whereas frequency curve is a curve that is obtained by joining the top midpoints of all rectangles of a histogram using a free hand.
Is a frequency polygon a line graph?
A frequency polygon is a line graph of class frequency plotted against class midpoint. It can be obtained by joining the midpoints of the tops of the rectangles in the histogram (cf.
What is the difference between polygon and line graph?
A frequency polygon is a line graph. The points are often not connected with a smooth line, but with straight line segments. Frequency polygons are used to show the changes over time.
Which is better histogram or frequency polygon?
1. Frequency polygon is an improvement over histogram because it provides a continuous curve indicating the causes of rise and fall in the data. On the other hand, frequency polygon is an approximate curve, but still it is more usefui as compared to histogram.
