frequency diagram
A frequency diagram is used to display grouped continuous data.
This type of diagram is similar to a bar chart. The main difference between them is that there are no gaps between the bars.
It has an equal class interval.
Let’s use the information below as a starting point.
The height of 30 students in an English lesson were measured. The results were grouped in a frequency table.
A frequency diagram was then drawn to show this data.
The horizontal axis shows the type of data collected, and the vertical axis shows the frequency – the number of people in each interval.