Using vendor bubble charts A bubble chart is a dynamically updated graph that plots assessment results for multiple vendors. Vendor managers can create and use bubble charts to compare the relative standing of vendors in three categories. The X- and Y-axes each represent a different category. Vendors are plotted on the chart as circular markers, or bubbles, which vary in size according to scores for the third category, or Z-axis. View bubble chartsTo view a vendor bubble chart:Create vendor bubble chartsTo create a vendor bubble chart, navigate to Vendor Performance > Vendors > Vendor Bubble Charts and create a record (see table for field descriptions).