Table 5. Effect of training on prediction error in experienced and non-experienced hygienists.
| Factory unit | Experience | |||||
|---|---|---|---|---|---|---|
| Yes | No | |||||
| Ebefore % | Eafter % | Δ Error | Ebefore % | Eafter % | Δ Error | |
| Crushing | 31.65 | 22.49 | –9.16 | 37.18 | 33.46 | –3.72 |
| Ball mill | 24.12 | 16.89 | –7.24 | 44.46 | 45.76 | 1.30 |
| Press | 49.30 | 26.45 | –22.85 | 56.38 | 38.16 | –18.22 |
| Coating preparation | 39.00 | 32.00 | –7.00 | 66.46 | 43.58 | –22.88 |
| Coating line | 38.95 | 26.60 | –12.35 | 56.80 | 51.16 | –5.64 |
| Furnace | 62.30 | 47.62 | –14.67 | 75.62 | 60.58 | –15.04 |
| Packing | 26.48 | 26.47 | 0.00 | 73.82 | 104.84 | 31.02 |