Following points must be kept in mind while constructing a diagram or graph. Every diagram or graph must have a serial number. It is necessary to distinguish one from the other.
1. Serial number:
Every diagram or graph must have a serial number. It is necessary to distinguish one from the other.
Title must be given to every diagram or graph. From the title one can know the idea contained in it. The title should be brief and self-explanatory. It is usually placed at the top.
3. Proper size and scale:
A diagram or graph should be of normal size and drawn with proper scale. The scale in a graphs specifies the size of the unit.
Diagrams must be as simple as possible. Further they must be quite neat and clean. They should also be descent to look at.
Every diagram or graph must be accompanied by an index. This illustrates different types of lines, shades or colors used in the diagram.
Foot notes may be given at the bottom of a diagram if necessary. It clarifies certain points in the diagram.