Command Files and System Files

Abstract

By now you should have explored the use of some or all of the procedures FREQUENCY, CROSSTABS, MEANS and T-TEST. You should also have explored the ways in which variables can be recoded, and new variables computed, and the ways in which cases can be selected or re-ordered. You may have been using either a data definition file containing ‘in-line’ data or a data definition file which includes a reference to a separate data file.