2D Categorized Scatterplots

Categorized scatterplots plot the values of a selected variable against the values of another selected variable broken down (categorized) by some other grouping or independent variable(s).

One or two grouping variables can be represented on one graph (i.e., a graph can represent a one-way or two-way categorization of cases). If two grouping variables are selected, a "crosstabulation of graphs" is produced. Note that you can choose to have separate plots for each category or to overlay the categorized plots in one graph using different colors and/or patterns for the individual plots.

STATISTICA provides a variety of fit types for the scatterplots as discussed in 2D Fit Lines. Note that the selected function is applied to each set of X-Y variables (e.g., a Double-Y plot has two fit lines applied, one for each Y variable).

In the categorized scatterplots called from the Results dialogs, the categorization (i.e., the breakdown into subsets of cases) based on the grouping variables uses the grouping codes (e.g., MALE, FEMALE) used in the current analysis (e.g., ANOVA or Breakdowns). If no grouping codes are used in the analysis, STATISTICA asks for the codes before the graph is produced.

One-way categorized histograms are available directly from all spreadsheets by using the Graphs of Input Data option (see Graphs of Input Data - Scatterplot by...).

A wide variety of categorized scatterplots are also available from the Categorized Graphs options (see Graphs menu graphs). These graphs offer a selection of categorization methods (including user-defined intervals, multiple subsets defined by logical expressions, and others). For a general overview of the graphics facilities in STATISTICA, see Graphs in STATISTICA.

See also, 3D XYZ Scatterplots, Ternary Scatterplots, Graphs - Categorized Scatterplots, and The Conceptual Overview for Categorized Scatterplots.