What is a Stacked Bar Chart?

A stacked bar chart (also called a stacked bar graph) is used to break down and compare parts of a whole. As opposed to a multi-set bar chart, a stacked bar chart segments their bars.

Each bar within stacked bar charts represents a whole, and segments in the bar represent different parts or categories of that whole. Particular categories in the bar are displayed in different colors. 

There are two primary types of stacked bar graphs:

  • Simple – they place each value for the segment after the previous one. They work well for comparing the total amounts across each group/segmented bar.
  • 100% – they show the percentage-of-the-whole of each group and are plotted by the percentage of each value to the total amount in each group. They work well for comparing the relative differences between quantities in each group.

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