Understanding and using Bar Charts
How to read Bar Charts
Bar charts can represent quantitative measures vertically, on the y-axis, or horizontally, on the x-axis. The style depends on the data and on the questions the visualization addresses. The qualitative dimension will go along the opposite axis of the quantitative measure. Bar charts typically have a baseline of zero. If another starting point is used, the axis should be clearly labeled to avoid misleading the Viewer.
Many other variations of bar charts exist. Stacked bar charts, side-by-side bar charts, clustered bar charts, and diverging bar charts are representative examples. Labels and legends help the viewer determine the details included in these charts.
This bar chart is called a side-by-side bar chart.
- It highlights the dominant set of data with a dark color, and the other set with a neutral color
- Sorted from earliest to latest year
- Not too many dimensions compared