CAS Exam MAS-I Fall 2019, Question 31
Study guide: Exam MAS-I
In order to predict individual candidates' test scores a regression was performed using one independent variable, Hours of Study, plus an intercept. Below is a partial table of data and model results:
| Candidate | Test Score | Hours of Study | Leverage | Standardized Residuals |
|---|---|---|---|---|
| 1 | 2,041 | 538 | 0.6205 | -1.3477 |
| 2 | 2,502 | 548 | 0.2018 | -0.4171 |
| 3 | 2,920 | 528 | 0.6486 | -1.1121 |
| 4 | 2,284 | 608 | 0.2807 | 1.1472 |
Calculate the number of observations above that are influential using Cook's Distance with a unity threshold.
- A) 0
- B) 1
- C) 2
- D) 3
- E) 4
Answer this question and see the worked solution