Use a chart when you want your audience to easily understand a large quantity of data and the relationships between parts of the data. A chart is often much better at presenting information visually than hard-to-read numbers in a table.
Chart Types
Column
Column charts are used to compare different values vertically side-by-side. Each value is represented in the chart by a vertical bar.
Line
Line charts are used to illustrate trends over time. Each value is plotted as a point on the chart and is connected to the other values by a line.
Bar
Bar charts are just like column charts, except they display information in horizontal bars rather than in vertical columns.
Pie
Pie charts are useful for showing values as a percentage of a whole. The values are represented by different colors.