Bar Chart

A bar chart is a graph that presents categorical data with rectangular bars with heights or lengths proportional to the values that they represent. The bars can be plotted vertically or horizontally.

• Comparing quantities across different categories
• Showing changes in quantity over time
• Illustrating the distribution of data across groups
• Presenting survey results or demographic data

• Grouped Bar Charts: Compare values across categories for multiple series
• Stacked Bar Charts: Show the composition of each category
• 100% Stacked Bar Charts: Display the percentage contribution of each value to the total

When interpreting a bar chart, consider the following:

• The height or length of each bar represents its value
• Compare the relative sizes of bars to understand differences between categories
• For grouped or stacked charts, look for patterns across groups
• Pay attention to the scale of the value axis to avoid misinterpretation