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The mean, standard deviation (SD), and ranges for the five identified factors
| PCA component | |||||
|---|---|---|---|---|---|
|
|
|||||
| Ease of hearing | Annoyance | Impact of noise | Sounds coming from inside the classroom | Sounds coming from outside the classroom | |
| Mean | 2.0 | 2.3 | 2.6 | 2.6 | 1.4 |
| SD | 0.7 | 0.9 | 0.9 | 0.8 | 0.5 |
| Min–max | 1.0–4.1 | 1.0–5.0 | 1.0–4.0 | 1.3–5.0 | 1.0–5.0 |
