| Mn | Cu | ||||||
Sample no | Recommended value (%) | Quaternion regression analysis value (%) | Absolute error (%) | Relative error (%) | Recommended value (%) | Quaternion regression analysis value (%) | Absolute error (%) | Relative error (%) |
GF1 | 0.518 | 0.520 | 0.002 | 0.39 | 0.055 | 0.054 | −0.001 | −1.82 |
GF2 | 0.424 | 0.422 | −0.002 | −0.47 | 0.078 | 0.078 | 0.000 | 0.00 |
GF5 | 0.398 | 0.396 | −0.002 | −0.50 | 0.105 | 0.105 | 0.000 | 0.00 |
GF7 | 1.312 | 1.311 | −0.001 | −0.08 | 0.835 | 0.838 | 0.003 | 0.36 |
GF9 | 0.642 | 0.644 | 0.002 | 0.31 | 0.076 | 0.077 | 0.001 | 1.32 |
GF12 | 0.556 | 0.556 | 0.000 | 0.00 | 2.883 | 2.882 | −0.001 | −0.03 |
Average value | 0.642 | 0.642 | 0.002 | 0.29 | 0.672 | 0.672 | 0.001 | 0.59 |