Add a Missing Value Definition to a categorical variable

Overview

A missing value is used to indicate that the question was not missed but there is no data for the question. The missing value (by default) will be excluded from data analysis, with an option to include the missing value. If the variable is used in any calculations or skip logic, click here to review how the missing value is treated.

Required Role(s)

Project Management

Steps

Open the Variable Update window (click here for steps)
Select the Pick List tab
Check the box in the Miss. (missing) column for pick list elements that are considered missing values
Select Continue
Select Save or Save and Return to save the changes to the variable group