bubble graph

A graph in which both axes represent values of data, rather than dimension members. Bubble graphs are much like scatter graphs, except that the size of the marker is significant.

Markers on a bubble graph are called bubbles. Each bubble represents three group values. The first group value determines the bubble's position along the X-axis, the second group value determines the bubble's position along the Y1-axis, and the third group value (also known as the Z value) determines the size of the bubble.