Grouping or Splitting Data in SPSS
In SPSS, Split File is used to run statistical analyses on subsets of data without separating your data into two different files.
When analyzing data, it is sometimes useful to temporarily "group" or "split" your data in order to compare results across different subsets. This can be useful when you want to compare frequency distributions or descriptive statistics with respect to the categories of some variable (e.g., Gender) - especially if you want separate tables of results for each