[R] plotcp() in rpart()

[Yuelin Li]

   What happens if plotcp() shows an V-shape profile?  
   It seems that the predictors (I have a few) do not help the splits.  
   Would it be reasonable to prune it at size 6?  
   Or perhaps rpart() is not suitable for this analysis?  

What I meant on the last sentence was perhaps I made a poor choice of the predictors to enter into rpart.  They do not seem to be associated with the classes. 

Yuelin.
   

 
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