Limiting multiple lines When using multiple lines to compare trends, keep the number of lines to to a minimum-probably no more than two. Comparing more than two trends on the same line graph can create confusion for your audience. Summary Following the guidelines in this document will help you create pie charts, bar graphs, and line graphs that present information clearly. Bar Shows contrast between quantities. Line Indicates the relationship of one variable to another.
Area Indicates the volume relationship of one variable to another.
Scatter Plot Correlates two factors by marking the points where particular events occurred. Statistical Deviation Shows typical and exceptional ranges for particular qualities. Each chart format has its own design considerations, but there is plenty of room for experimentation-use your computer software to try new techniques. As long as you choose the correct format and keep in mind the general concepts of simplicity, consistency, and labeling, you will be well on your way toward creating an effective chart that is understandable at a glance.