How Column Charts Are Organized
Column charts feature rectangular bars of the same width with lengths that are proportional to the values they represent, with each bar representing a particular category. Theya��re used to show data changes over a period of time or to make comparisons between items. Youa��ll usually find that categories run along the horizontal axis and values along the vertical axis, with the length of each bar in the chart proportional to a specific category.
One variation of the column chart is called a a�?stacked column chart.a�? Here, the data points for each category are stacked instead of clustered. This works like a mini pie chart in that the viewer is able to see the portion of the total for each data point in the category.