Tech Tips
Crosstabs and Chi-Square Tests in IBM SPSS Modeler
To improve your experience using IBM SPSS Modeler, the Version 1 SPSS experts have created various Tech Tips. This Tech Tip shows how to run crosstabs and Chi-Square tests in IBM SPSS Modeler.
IBM SPSS Modeler is an extensive predictive analytics platform designed to bring predictive intelligence to decisions made by individuals, groups, systems, and the enterprise. Modeler has an easy-to-use drag-and-drop user interface with a complete set of tools for accessing data, data examination, preparation, modelling, evaluation, and deployment.
IBM SPSS Modeler users have a complete toolset to build predictive models from start to finish. Modeler uses node-based, visual programming. Users pick nodes from palettes and place them on the stream canvas. Once nodes have been placed on the stream canvas and edited, they can be linked to form a stream. A stream represents a flow of data through several operations (nodes) to a destination that can be in the form of output (either text or chart), a model, or the export of data to another format (e.g., a database).
Part of the model-building process involves testing variable relationships. IBM SPSS Modeler provides the Statistics, Matrix and Means node to examine variable relationships. The Matrix node allows users to run Crosstabs with Chi-Square tests. The Matrix node is located on the Output palette.
To obtain a crosstab table and chi-square test go to the Output palette. Select the Matrix node and drag it onto the stream canvas. You can also double click the node to drop it onto the stream canvas. Once it is on the canvas you can connect it to your stream. Double click to open the node. Use the field chooser button to select the field to put in the Rows and the field that you want in the Columns.
Click on the Appearance tab, Select percentage of row, column or total. Click on Run. The results of the Chi-square test show if there is a significant association between variables. Users can also examine the output from the crosstab table.
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