A clustered bar chart (also known as a grouped bar chart) displays multiple bars for each category, representing different sub-categories. It is used to compare multiple related series side by side within the same group.
This type of chart is ideal for comparing performance across categories and segments simultaneously. For example, you might use a clustered bar chart to show male vs. female participation across different academic departments. Each group (department) has two bars next to each other for easy comparison.
Clustered bar charts work well for demographic comparisons, satisfaction levels across different service channels, or sales figures by region and year. However, they can become crowded if there are too many groups or series.