Hi- I am JUST getting started in learning to use SAS OnDemand. I am trying to understand why I should use SAS data procs to create subsets of my data... as someone who already knows how to use excel, doesn't it make more sense for me to just make csv files for each and every relationship I want to test, and then make a SAS data table for each one of those? I'm not doing anything super complicated: just running two factor ANOVAs. Or am I missing something in my understanding of how to use SAS? Thanks very much, Andy_R
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