TMA4315 Generalized linear models
Grading document for exam 19.12.2018
Mette Langaas
12/31/2018
Questions? Contact Mette.Langaas@ntnu.no
This document describes how the grading was done for the TMA4315 H2018 exam. The NTNU official grading scale was used:
- A: 89-100 points
- B: 77-88 points
- C: 65-76 points
- D: 53-64 points
- E: 41-52 points
- F: 0-40 points
To secure a passing grade it was necessary to pass the written exam (scoring at least 28/70 points), and to secure a score of at least 12/30 in total for the 3 compulsory exercises.
A total of 38 students handed in the written exam, resulting in the following (percentage) grade frequencies
| kars | Freq |
|---|---|
| A | 53 |
| B | 34 |
| C | 3 |
| D | 8 |
| F | 3 |
The maximal possible score for each problem was given on the exam. The summary of scores for the 5 problems were:
| 1 | 2 | 3 | 4 | 5 | |
|---|---|---|---|---|---|
| Min. | 1.0 | 6.1 | 0.0 | 0.4 | 0.0 |
| 1st Qu. | 12.5 | 13.9 | 5.1 | 2.9 | 12.0 |
| Median | 13.9 | 18.1 | 8.4 | 6.0 | 15.0 |
| Mean | 12.7 | 16.0 | 7.1 | 5.5 | 13.4 |
| 3rd Qu. | 14.0 | 19.1 | 9.0 | 7.3 | 15.0 |
| Max. | 15.0 | 20.0 | 10.0 | 10.0 | 15.0 |
For the different questions within each problem, the maximal score is given below. This grading scheme will also be used for complaints (klager).
- Problem 1: 15
- 1.1 Exp.fam: 5
- 1.2 E,Var: 1
- 1.3 E,Var: 2
- 1.4 Constraints: 2
- 1.5 Canonical link: 3
- 1.6 Advantages: 2
- Problem 2: 20
- Three components: 5
- Parameter estimation (l,s,F,NR,ML): 9
- Deviance (and LRT): 6
- Problem 3: 10
- 3.1 Connection: 2
- 3.2 Explain \(\beta_0\): 2
- 3.3 Wald test: 5
- 3.4 Saturated: 1
- Problem 4: 10
- 4.1 AIC: 1
- 4.2 LRT: 4
- 4.3 CI: 5
- Problem 5: 15
- 5.1 Binomial: 2
- 5.2 Logit: 2
- 5.3 Interpret: 2
- 5.4 Predict: 3
- 5.5 LRT: 3
- 5.6 Interpret: 3