Missing values for a numeric variable

  1. In the Variables tab click the age variable's Missing values cell value.
  2. 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
    User-missing values dialog. The Up to 3 discrete values option is selected and 999 is entered as the first missing value.
  3. Click Enable to enable the specification of missing values.
  4. Select Up to 3 discrete values from the Definition list.
  5. Click Add discrete value and type 999 in the Value field.
  6. Click Apply.

    Now that the missing data value has been added, a label can be applied to that value.

  7. Click the age variable's Value labels cell value.
  8. Click Add value label, type 999 in the Value field, and type No Response in the Label field.
  9. Click Apply to add this label to your data file.

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