Recoding the Variables

  1. To recode 0's as missing values, from the menus choose:

    Transform > Recode Into Same Variables...

    Figure 1. Recode into Same Variables dialog box
    Recode into Same Variables dialog box with five variables selected
  2. Select Long distance last month, Toll free last month, Equipment last month, Calling card last month, and Wireless last month as numeric variables.
  3. Click Old and New Values.
  4. Type 0 as the Old Value.
  5. Select System-missing New Value.
  6. Click Add.
    Figure 2. Old and New Values dialog box
    Old and New Values dialog box with old values 0 assigned as new System-missing values
  7. Click Continue.
  8. Click OK in the Recode into Same Variables dialog box.

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