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The Cronbach’s α coefficient of the deleted items.
| Process | Number of question | Cronbach’s α coefficient |
|---|---|---|
| Undertake factor analysis results | 13 | 0.615 |
| Delete Q11 | 12 | 0.667 |
| Delete Q13 | 11 | 0.686 |
| Delete Q6 | 10 | 0.707 |
| Delete Q8 | 9 | 0.723 |
| Delete Q7 | 8 | 0.726 |
| Delete Q3 | 7 | 0.727 |
| Delete Q4 | 6 | 0.730 |
| Delete Q10 | 5 | 0.731 |
