User Guide

193
File Handling a
nd Fi le Transformations
Figure 8-10
Select Cases If dialog box
 If the result of a conditional expression is true, the case is included in the selected
subset.
 If the result of a conditional expression is false or missing, the case is not included
in the selected subset.
 Most conditional expressions use one or more of the six relational operators (<, >,
<=, >=, =, and ~=) on the calculator pad.
 Conditional expressions can include variable names, constants, arithmetic
operators, numeric and other functions, logical variables, and relational operators.
Select Cases: Random Sample
Thisdialogboxallowsyoutoselectarandomsamplebasedonanapproximate
percentage or an exact number of cases. Sampling is performed without replacement;
sothesamecasecannotbeselectedmorethanonce.