The online data analysis system (DAS) used on this site uses a system called Survey Documentation and Analysis (SDA), developed and maintained by the Computer-assisted Survey Methods Program (CSM) at the University of California, Berkeley. Documentation for DAS/SDA can be found on their website.
You may choose to explore the DAS independently, or try the following exercises:
The following two exercises illustrate how to create basic two-variable tables and how to interpret the tables.
These exercise illustrate how to further examine a two-variable relationship by introducing a control variable into the analysis.
Examining potential intervening variables
Examining potential extraneous or confounding variables
Examining conditional relationships
Joint influence of two independent variables
This discussion provides some guidance for using this dataset for more elaborate research projects.