Mosaic and Chessboard Diagrams

Features of Mosaic and Related Diagrams

  • These diagrams are a graphical method for visualizing n x m contingency tables*.
Mosaic Diagram
  • The areas of the mosaic tiles are proportional to the observed frequency of groups in the contingency table.
Parquet Diagram
  • The areas or the parquet tiles are proportional to the expected frequency of groups in the contingency table.
Example Graph

A Mosaic Diagram and the Corresponding Contingency Table of Observed Frequency of Groups

Mosaic Diagram for Visualizing Observed Frequencies

Two-Way Contingency Table (Observed Frequency)

* Hartigan, J. A., and Kleiner, B. (1981). Mosaics for Contingency Tables, In W. F. Eddy (Ed.), Computer Science and Statistics: Proceedings of the 13th Symposium on the Interface. New York: Springer-Verlag.