Exam MAS-II Practice Question 11
Study guide: Exam MAS-II
A regression tree is grown to predict claim severity Y (in thousands) from vehicle age X. The six training observations are:
X |
1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
Y |
4 | 6 | 5 | 11 | 13 | 12 |
The first split is chosen by recursive binary splitting among the cutpoints X < 3, X < 4 and X < 5.
Determine the cutpoint chosen and the total residual sum of squares (RSS) of the resulting two regions.
- A)
X < 4, with total RSS 4.00 - B)
X < 4, with total RSS 2.00 - C)
X < 5, with total RSS 29.50 - D)
X < 3, with total RSS 40.75 - E)
X < 5, with total RSS 0.50
Answer this question and see the worked solution