Hi
I am very new to R and have not able to find the answer to my question
in the manual or any other post.  I have a dataset that has various
different sites names with data relating to each site.  The data is in
one dataset.  I want to loop through the different site names and
perform my test on each site.  The sites are named not numbers for
example "YYC".  How do I do this.  I hope I was clear enough.
Thanks for the help 


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