SOA Exam SRM Sample Question 57
Study guide: Exam SRM
You are given:
i) The following observed values of the response variable, R, and predictor variables X, Y, Z:
R |
4.75 | 4.67 | 4.67 | 4.56 | 4.53 | 3.91 | 3.90 | 3.90 | 3.89 |
|---|---|---|---|---|---|---|---|---|---|
X |
M | F | M | F | M | F | F | M | M |
Y |
A | A | D | D | B | C | B | D | B |
Z |
2 | 4 | 1 | 3 | 2 | 2 | 5 | 5 | 1 |
ii) The following plot of the corresponding regression tree:
Calculate the Mean Response (MR) for each of the end nodes.
- A) MR(T1) = 4.39, MR(T2) = 4.38, MR(T3) = 4.29, MR(T4) = 3.90
- B) MR(T1) = 4.26, MR(T2) = 4.38, MR(T3) = 4.62, MR(T4) = 3.90
- C) MR(T1) = 4.26, MR(T2) = 4.39, MR(T3) = 3.90, MR(T4) = 4.29
- D) MR(T1) = 4.64, MR(T2) = 4.29, MR(T3) = 4.38, MR(T4) = 3.90
- E) MR(T1) = 4.64, MR(T2) = 4.38, MR(T3) = 4.39, MR(T4) = 3.90
Answer this question and see the worked solution