How to perform 'Async Standard Deviation' in SAS.
* Task: Async Standard Deviation
* Language: SAS
%macro async_standard_deviation()
* Implementation for Async Standard Deviation
%let result = ...; * Initialize variable
* TODO: Implement core logic here
* Step 1: Prepare data
* Step 2: Process Async Standard Deviation
%put("Done");
%mend;