User Guide

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Chapter 5
Figure 5-3
Scale and categorical variables in a chart procedure
For SPSS
-format data files created in earlier versions of SPSS products, the following
rules apply:
 String (alphanumeric) variables are set to nominal.
 String and numeric variables with defined value labels are set to ordinal.
 Numeric variables without defined value labels but less than a specified number
of uniq
ue values are set to ordinal.
 Numeri
c variables without defined value labels and more than a specified number
of unique values are set to scale.
The def
ault number of unique values is 24. To change the specified value, change
the interactive chart options (from the Edit menu, choose
Options andclickthe
Interactive tab).