Types of Bar Diagrams:
- Simple Bar Diagram: A simple bar diagram is drawn for only one variable over a base, say various place, times, things, etc.
- Clustered Bar Diagram: This type of diagram is drawn for more than one related variables over a common base say various places, times, things, etc.
- Divided Bar Diagram: It is drawn when every single value of the variable over a common base, say places, times, things, etc. has sub-categories.
Points to be considered while drawing a Bar Diagram:
- The width of each bar should be equal.
- The length (height) of respective bars should be proportional to the value of the variable they represent.
- The distance between all bars should be equal and it should be maintained equal to the distance between the origin and the first bar.
- All bars are usually drawn on X-axis. Instead it can also be drawn horizontal on Y-axis.
- All bars should be arranged from left to right in order of the data series.
