[R] RandomForest-question about split point and GetTree function

I am looking at results of a random forest. In the documentation, it says the following for categorical variables: "For categorical predictors, the splitting point is represented by an integer, whose binary expansion gives the identities of the categories that goes to left or right. For example, i

[R] stats:sigma doesnt exist in 3.2.3

I am trying to use a package that uses the package car which uses sigma in the stats package, but apparently my version of the stats package doesn’t contain the function sigma. How can I go about fixing this? Thanks Error : object ‘sigma’ is not exported by 'namespace:stats' In addition: War