This type of graphs visualizes a relationship between three variables (representing the X, Y, and one or more Z [vertical] coordinates of each point in 3- dimensional space) categorized by a grouping variable. One component graph is produced for each level of the grouping variable (or user-defined subset of data) and all the component graphs are arranged in one display to allow for comparisons between the subsets of data (categories) (see graph number 1, below).
For a detailed discussion of Categorized Graphs, see
Categorized Graphs in
Selected Topics in Graphical Analytic Techniques. See also,
Data Reduction.
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