Categorized Probability-Probability Plots - Quick Tab

Graphical Analytic Techniques

Select the Quick tab of the Categorized Probability-Probability Plots Startup Panel to specify a categorized P-P plot using the distribution specified on the Advanced tab and a limited number of X and Y categories.

Layout

Choose either a Separate plot layout (where each subset of cases is displayed in a separate small graph) or an Overlaid plot layout (where all subsets are overlaid in one graph and identified only by patterns and colors) for the categorized plots.

Variables

Click this button to display a variable selection dialog box, in which you can select the X and (optional) Y grouping variables and the dependent variable(s) to be displayed in the graph. If more than one dependent variable is selected, a sequence of graphs (one for each dependent variable) will be produced using the same set of grouping variables. The selections made are displayed below the Variables button.

Note: the selected grouping variables do not have to be categorical variables (e.g., contain codes); you can use one of the methods of categorization to categorize continuous variables. The selection of grouping variables is not necessary if the categories are defined via the Multiple Subsets method on the Advanced tab.

X-Categories, Y-Categories

Use the options in these group boxes to choose the method of categorization for each of the selected grouping variables. (Note that grouping variables do not need to be selected if Multiple Subsets categories are selected on the Advanced tab.)

Categorization is used in two classes of graphs in Statistica: categorized graphs (e.g., Categorized Scatterplots) and graphs that include grouping or categorized variables (e.g., 2D Histograms, or 2D Box Plots). Select one of the methods of categorization; click the links listed below for descriptions:

Do not assign average ranks to tied observations. This check box is selected by default, and enables you to see all data points, even the ties. When this check box is cleared, the tied points will overlap.