Reference : Charts and display preferences : Criterion settings
  
Criterion settings
You can display elements in charts according to criteria.
Criterion settings
From the X Axis, Y Axis, and Bubble lists, select the criteria you want on the axes. Use a type of chart that can simultaneously present the desired criteria. Along with the criterion name, the following information about the criterion is provided:
Public
The criterion uses pairwise comparisons to calculate priorities. All members share one common set of comparisons. See the X Axis list in the image above.
Member name
The criterion uses pairwise comparisons to calculate priorities. Each member has their own set of comparisons. See the Y Axis list in the image above.
Estimate
The criterion uses attribute values, or estimates, to calculate priorities. See the Z Axis in the example above.
Sum
The criterion uses the priorities of its children to calculate its priorities.
See also
Charts and display preferences