Warning! It seems that you are using Dodona within another webpage, so not everything may work properly. Let your teacher know so that he can solve the problem by adjusting a setting in the learning environment. In the meantime, you can click
this link to open Dodona in a new window.
Warning! The page was not fully loaded, probably because of a network issue. It could be that not all functionalities work as expected. Please try reloading the page.
Fitting Regression Trees 2
set.seed(1)
train <- sample(1:nrow(Hitters), nrow(Hitters) / 2)
tree.hitters <- tree(Salary ~ ., data = Hitters, subset = train)
set.seed(1)