In this method, the data are presented with the help of bars. These bars are usually arranged according to relative magnitude of the items. In this diagram one bar is drawn for each value or item and the length of the bar is based on the value of item. The bars must have the similar width and uniform space should be kept between the two bars. These diagrams can be drawn either vertically or horizontally, but bars on vertical base are more common.
The use of simple bar diagram is. considered appropriate in presenting data of individual series, time series or spatial series.
Example : Make a bar diagram with the following data.
| Year |
1990 |
1991 |
1992 |
1993 |
1994 |
| Import (In Crores) |
304 |
307 |
300 |
312 |
316 |
