SAS 9.1.3 Language Reference: Concepts, Third Edition, Volumes 1 and 2

Definition of Missing Values

missing value

   

is a value that indicates that no data value is stored for the variable in the current observation. There are three kinds of missing values:

  • numeric

  • character

  • special numeric.

By default, SAS prints a missing numeric value as a single period (.) and a missing character value as a blank space. See "Special Missing Values" on page 102 for more information about special numeric missing values.

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