This is a question about decision trees in stats. Please refer to the graphs.

X2

1 o 15 3 5 10 1 -1.80 0.63 Xl -1.06 0 2.49 0.21 Part A: Sketch the tree corresponding to the partition of the predictor space illustrated in the left-hand panel of the figure above. The numbers inside the boxes indicate the mean of Y within each region. Part B: Create a diagram similar to the left-hand panel of the figure above, using the data from the tree illustrated in the right-hand panel of the same figure. You should divide up the predictor space into the correct regions, and indicate the mean for each region.