Types of Diagram

• Simple bar Diagrams

A simple bar Diagram can be drawn either on horizontal or vertical base.Bars on horizontal baseare more common. A bar Diagram is simple to draw and easy to understand.In business and economics it is commonly used.

Vertical  bar Diagram

Horizontal bar Diagram

Multiple bar diagram

are used to denote more than one phenomenon,Multiple bars are useful for direct comparison between two values.The bars are drwan side by side.In order to distinguish the bars,different colours,shades,etc........May be used and a key index to this effect be given to understand the different  bars .

Sub-divided bar Diagram (component bar diagram.

The bar is subdivided into various parts in proportion to the values given in the data and may be drawn on absolute figures or percentages.Each component occupies a part of the bar proportional to its share in the total

Percentage subdivided bar diagram

The above-mentioned diagrams have been used to represent absolute value.But comparison is made on a relative basis.The various component are expressed as percentage to the total.for dividing the bars these percentages are cumulated.In this case,the bars are all of equal height.Each segment shows the percentage to the total.

Pie diagram

A pie chart is a simple descriptive display of data that sum to a given total.A pie chart is probably  the most illustrative way of displaying quantities as percentages of given total.The pie diagram  ranks high in understanding and be careful that you do not have too many slices in the pie,or they wilk become meaningless.Also,note that a pie chart is usually used as a snapshot of ONE moment in time.lle