Hi, I am a starter of SAS. I want to do a form a sample based on a dataset contains a total of Y years observations, and I only want a random subset years to do some tasks. Here is my Example: data xxx; input YEAR data; datalines; 2001 123 2002 123 2001 123 2003 123 2001 123 2003 123 2004 123 2005 123 2001 123 2003 123 ; run; For instance, it has 2001 to 2005, say if i want 2 random years data. say in the first run; 2001 and 2002 year' observations will be selected in a new dataset, the second time is another 2001 and 2005. It is totaly random.
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