0040 - Use an UNANSWERED Variable in a Calculation
Description:
How to include variables which might be UNANSWERED in a mathematic formula.
How to include variables which might be UNANSWERED in a mathematic formula.
ZERO( NumVar1 ) + ZERO( NumVar2 ) + ZERO( NumVar3 )
The ZERO model will automatically treat an unanswered variable as 0 purposes of a calculation (it does not SET the variable to 0).