The following are the merits of Graphical Presentation:
1. Diagrammatic presentation implies presenting data-items in simple and easy manner.
2. The statistical numbers shown by diagrammatic presentation are kept in mind for a longer period of time.
3. It is a very attractive and effective means.
4. Various facts can be compared using diagrams.
5. Pictures, besides providing information about data items, also entertain us.
6. This helps in calculating the averages like median, mode and quartiles.
7. The relationship of correlation between two variables is also gained with its help.
8. Special knowledge or training is not required to understand it.
