how to split factor variable into 12 variables how to split factor variable can factor variables be split into 12 how many dummy variables in a cart tree? do you split factor variables into dummies what are 12 level factor variables what is the split factor in rpart how to split factor variable in cart what is the factor variable in a cart how to split a 12 level factor variable how many dummy variables to split in a cart model how to split factor variable when to divide 12 dummy variables which factor variable can be split into 12 dummy variables how many variables are used to fit a cart does rpart split the 12 level factor variable into dummy variables do i split factor variable how to split a 12 level factor variable how do i find the dummy variables of the 12-level factor variable how to split factor variable into twelve dummy variables