Cross tabulation is the process made with two or more data sources (variables) that are tabulating the results of one against the other. It is the process of creating a contingency table from the multivariate frequency distribution of statistical variables. Heavily used in survey research, cross tabulations (or crosstabs for short) can be produced by a range of statistical packages, including some that are specialised for the task. They give a basic picture about the interrelation of two variables and help to find out interactions between them. They make it easy to zoom into on "hot spots" to see the most significant relationships between the two selected data sources.
Survey weights often need to be incorporated. Unweighted tables can be easily produced by some spreadsheets and other business intelligence tools, where they are commonly known as pivot tables.
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