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Question: What is the purpose of the SUM statement in the DATA step?

Answer: The SUM statement in the DATA step is used to accumulate the sum of numeric variables across observations within a BY group or across all observations.

Example:

DATA summary_dataset; SET original_dataset; BY category_variable; /* Create a running total of variable */ RUNNING_TOTAL + variable; IF LAST.category_variable THEN OUTPUT; RUN;

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Question: What is the purpose of the SUM statement in the DATA step?

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