Elementary Statistics and Computer Application

Simple Bar diagram

If the classification is based on attributes and if the attributes are to be compared with respect to a single character we use simple bar diagram.

Example

• The area under different crops in a state.
• The food grain production of different years.
• The yield performance of different varieties of a crop.
• The effect of different treatments etc.
• Simple bar diagrams Consists of vertical bars of equal width. The heights of these bars are proportional to the volume or magnitude of the attribute. All bars stand on the same baseline. The bars are separated from each others by equal intervals. The bars may be coloured or marked.

Example
The cropping pattern in Tamil Nadu in the year 1974-75 was as follows.

Crops	Area In 1,000 hectares
Cereals	3940
Oilseeds	1165
Pulses	464
Cotton	249
Others	822

The simple bar diagram for this data is given below