Charts & Visualizations
Bubble Chart
Bubble charts extend scatter plots by adding a third dimension through bubble size. Each bubble represents a data point with x and y coordinates plus a size value, enabling visualization of three quantitative variables simultaneously.
Definition
Bubble charts extend scatter plots by adding a third dimension through bubble size. Each bubble represents a data point with x and y coordinates plus a size value, enabling visualization of three quantitative variables simultaneously.
Examples
Country comparison by GDP (X), Life Expectancy (Y), and Population (Size)
Chart Visualization
This example includes an interactive chart visualization with 3 data points.
Chart type: bubble
Usage
Best Used For
- Comparing three quantitative variables
- Showing relationships with magnitude
- Identifying patterns across multiple dimensions
- Visualizing hierarchical or weighted data
Data Requirements
[Object]
Limitations
Important Considerations
- ⚠Area perception can be misleading (use radius scaling carefully)
- ⚠Overlapping bubbles can hide data
- ⚠Limited to three primary variables per point (plus color/category)
- ⚠Difficult to read exact values, especially size
Best Used For
- Comparing three quantitative variables
- Showing relationships with magnitude
- Identifying patterns across multiple dimensions
- Visualizing hierarchical or weighted data
