Missing values for a numeric variable
- In the Variables tab click the age variable's Missing values cell value.
- You can specify up to three distinct missing values, or you can specify a range of values plus
one additional discrete value.
Figure 1. User-missing values dialog - Click Enable to enable the specification of missing values.
- Select Up to 3 discrete values from the Definition list.
- Click Add discrete value and type 999 in the Value field.
- Click Apply.
Now that the missing data value has been added, a label can be applied to that value.
- Click the age variable's Value labels cell value.
- Click Add value label, type 999 in the Value field, and type No Response in the Label field.
- Click Apply to add this label to your data file.