title: What is the scale of the MeanDecreaseGini in R randomForest package?
body: <p>the Gini index is a score that varies from 0 to 1, however, in my experience, the MeanDecreaseGini in R's randomForest package is several fold larger than this range. My naive assumption is that if the Gini index ranges from 0 to 1, the mean decrease in the Gini index for a given variable should also be within this range. I haven't been able to find if this score is scaled (eg. mean decrease x 1000). Can someone please tell me if MeanDecreaseGini has been scaled, and if so what that scale is, or is my interpretation completely wrong?</p>
  
  <p>Thanks,</p>
  
  <p>Sam</p>