SOA Exam SRM Sample Question 59
Study guide: Exam SRM
You apply 2-means clustering to a set of five observations with two features. You are given the following initial cluster assignments:
| Observation | X1 | X2 | Initial cluster |
|---|---|---|---|
| 1 | 1 | 3 | 1 |
| 2 | 0 | 4 | 1 |
| 3 | 6 | 2 | 1 |
| 4 | 5 | 2 | 2 |
| 5 | 1 | 6 | 2 |
Calculate the total within-cluster variation of the initial cluster assignments, based on Euclidean distance measure.
- A) 32.0
- B) 70.3
- C) 77.3
- D) 118.3
- E) 141.0
Answer this question and see the worked solution