A frequency polygon can be created for the same set of data. Instead of drawing bars, plot the midpoint of the class interval and the frequency. These points are joined by line segments.

An alternative way of showing this data is to use a frequency polygon. The frequency is plotted against the midpoint of each group and the points are then joined by straight lines. Using the above ...

For students between the ages of 11 and 14. Learn more about frequency diagrams and frequency polygons with this BBC Bitesize Maths article. For students between the ages of 11 and 14. Scatter ...