2D Categorized Histograms

Categorized histograms offer an extension of the regular histograms, allowing you to examine the distribution of values of the selected variable(s) 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.

In the categorized histograms 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 - Histograms by...). You can also visualize frequency distributions of values in cases (and not variables); use the Graphs of Block Data - Custom Graphs from Block by Row or Custom Graph for Entire Row option from the spreadsheet shortcut menu (instead of transposing the data file).

A wide variety of categorized histograms are also available from the  Categorized Graphs options (in the Graphs menu). 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,  2D Histograms, Graphs - Categorized Histograms, and the Conceptual Overview for Categorized Histograms.