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Home Features of DataLab Tools Creating Cross Terms  
See also: Regular Raster of Variables


Creating Cross Terms
When analysing factorial designs or when establishing regression models second order cross terms should be included to allow for interactions of the independent variables. The command Tools/Create Cross Terms... calculates all second and third order cross terms of a set of selected variables and appends them to the matrix or stores them in the matrix clipboard. The following table shows as an example the resulting cross terms of a factorial design with four variables:
