Correspondence Analysis (CA): Table Specifications Startup Panel - Correspondence Analysis (CA) Tab

Select the Correspondence Analysis (CA) tab of the Correspondence Analysis (CA): Table Specifications Startup Panel to access the options described here. Use these options to specify the input table for the correspondence analysis.

Input. Three data file format options are available in the Input group box: Raw data (requires tabulation), Frequencies with grouping variables, and Frequencies w/out grouping vars.

Depending on the Input method selected (see above), one or more of the following option buttons will be available.

Row and column variable(s). Click the Row and column variable(s) button to display the standard variable selection dialog box. If you select one row variable and one column variable, then the analysis will be performed on the two-way table defined by the categories for the two variables.

Codes for grouping variables. Click the Codes for grouping variables button to display the Select Codes for Coding Variables dialog box. Use this dialog box to enter the codes (numbers or text values) that define the categories for the selected variables. If more than one variable was selected from the list of Row and column variable(s), then all combinations of the categories of the selected variables in one list (e.g., rows) will be crosstabulated against the respective combinations of categories for the variables in the other list (e.g., columns). Note that the Codes for grouping variables button is only available after Row and column variable(s) are selected.

Variable with frequencies/counts. Click the Variable with frequencies/counts button to display the standard variable selection dialog box, in which you select the appropriate variable that will be used in the analysis (i.e., the variable containing the measure of correspondence, similarity, confusion, association, etc.). Only positive values or zero are allowed in this variable (e.g., STATISTICA does not permit negative frequencies). Note that the Variable with frequencies/counts button is only available when the Frequencies with grouping variables option button is selected via the Input group box.

For examples and more detailed information on specifying tables for Correspondence Analysis, see Raw Data (Requires Tabulation), Frequencies with Grouping Variables, and Frequencies without Grouping Variables. See also, Correspondence Analysis Introductory Overview.