bar graph

A bar graph is a visual tool that uses rectangular bars to compare different categories or groups. Each bar's length or height represents the value or amount for that category, making it easy to see differences at a glance. The categories are typically labeled along one axis, while the numerical values are shown along the other. Bar graphs are useful for illustrating trends, comparisons, and patterns in data, allowing viewers to quickly assess which categories are larger, smaller, or similar. They are widely used in reports, presentations, and everyday contexts for clear, efficient data communication.