Table 3:
Paraphrased questions from SUS and the Likert score for 5 users: 1- Srongly Disagree, 5 - Strongly Agree. Last column shows the average per question and its interpretation. The last row shows overall SUS scores per user (SUS scoring details in [9]): ICARUS scored an average of 75 (above 68 is considered good [6]).
| Question | A | B | C | D | E | Average |
|---|---|---|---|---|---|---|
| 1. I would like to use this frequently. | 4 | 3 | 5 | 5 | 5 | 4.4 - Agree |
| 2. The system was easy to use. | 2 | 4 | 5 | 4 | 5 | 4 - Agree |
| 3. The various functions in this system were well integrated. | 4 | 4 | 5 | 4 | 5 | 4.4 - Agree |
| 4. Most people would learn to use this system very quickly. | 3 | 3 | 4 | 4 | 5 | 3.8 - Agree |
| 5. I felt very confident using the system. | 2 | 3 | 3 | 4 | 5 | 3.4 - Neutral |
| 6. I found the system unnecessarily complex. | 4 | 3 | 1 | 2 | 2 | 2.4 - Disagree |
| 7. I would need the support of a technical person to use this. | 3 | 3 | 1 | 2 | 3 | 2.4 - Disagree |
| 8. There was too much inconsistency in this system. | 2 | 2 | 2 | 1 | 1 | 1.5 - Disagree |
| 9. The system is very cumbersome to use. | 3 | 2 | 1 | 1 | 1 | 1.75 - Disagree |
| 10. I needed to learn a lot of things before I could get going with this system. | 3 | 2 | 4 | 1 | 1 | 1.75 - Disagree |
| Score | 50 | 62.5 | 82.5 | 87.5 | 92.5 | 75 |