What is meant by cardinality? Each Report in Google Analytics is made up of at least one Dimension.
Each Dimension has different values within it: there are several raws which compose the Report itself. All these lines are called cardinalities.
There are Dimensions that have a limited number of cardinalities, such as the User Type Dimension which has only two cardinalities inside:
- New Visitor
- Returning Visitor
And then there are high cardinality dimensions, such as the Page dimension.