ranksum requires tiedrank?
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I assumed that the function ranksum computed ranks, etc. automatically, but I ran across the documentation for tiedrank and now I am not sure. Do I need to run my data through tiedrank before running it through ranksum?
I am using ranksum because my data are non-normal, not because the data are inherently ordinal.
Accepted Answer
the cyclist
on 8 Feb 2012
No, you do not. ranksum() calls tiedrank() internally. You can see this by typing
>> edit ranksum
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