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What is the significance of the ‘OF’ in X=SUM (OF a1-a4,
a6, a9);?
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Answer Posted / prem krishnan
if missing value is there in any of the varibale,if we dont
use 'of' then it will give missing value "." in the
resultant variable.
if we use 'of' then it will give the sum of the values in
rest of the variable it will consider missing value
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