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Trueness assessment using ERM-FD101b (results in nm)
| NTA 2.3 | NTA 3.0 | |||||
|---|---|---|---|---|---|---|
| Mode | Median | Mean | Mode | Median | Mean | |
| Certified value | 82 | 82 | 87 | 82 | 82 | 87 |
| Standard uncertainty of certified value (u CRM) | 2 | 2 | 2 | 2 | 2 | 2 |
| Mean measured value | 82.3 | 83.8 | 87.8 | 87.0 | 77.7 | 84.1 |
| Measurement uncertainty (u meas) | 2.7 | 2.7 | 2.8 | 2.6 | 2.6 | 2.7 |
| Trueness uncertainty (u t) | 3.4 | 3.3 | 3.5 | 3.3 | 3.3 | 3.4 |
| Absolute bias (Δbias) | 0.3 | 1.8 | 0.8 | 5.0 | 4.3 | 2.9 |
| Significant? | No | No | No | No | No | No |
