How to Represent Missing Values in Raw Data

Representing Missing Values shows how to represent each type of missing value in raw data so that SAS will read and store the value appropriately.

Representing Missing Values
These missing values ... Are represented by ... Explanation

Numeric . a single decimal point

Character ' ' a blank enclosed in quotes

Special .letter a decimal point followed by a letter, for example, .B

Special ._ a decimal point followed by an underscore

***Representing Missing Values***
These missing values ...	Are represented by ...	Explanation
Numeric	.	a single decimal point
Character	' '	a blank enclosed in quotes
Special	.letter	a decimal point followed by a letter, for example, .B
Special	._	a decimal point followed by an underscore

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