| Items |
Derivative method (PAR) |
DD1 method (DPH) |
Multivariate method |
Densitometric method |
Official method [4]* |
| PAR |
DPH |
| PLS |
PCR |
PLS |
PCR |
PAR |
DPH |
PAR |
DPH |
| Mean |
98.50 |
102.00 |
99.25 |
98.35 |
101.4 |
98.20 |
100.0 |
101.7 |
98.69 |
99.90 |
| SD |
0.76 |
0.72 |
0.39 |
0.85 |
0.31 |
0.25 |
1.31 |
1.62 |
0.64 |
1.54 |
| RSD% |
0.77 |
0.70 |
0.39 |
0.86 |
0.30 |
0.25 |
1.31 |
1.59 |
0.65 |
1.54 |
| n |
6 |
6 |
6 |
6 |
6 |
6 |
6 |
6 |
6 |
6 |
| Variance |
0.57 |
0.51 |
0.15 |
0.72 |
0.09 |
0.06 |
1.71 |
2.62 |
0.40 |
2.371 |
| Student’s t-test |
0.256
(2.30) |
2.260
(2.73) |
1.697
(2.26) |
1.036
(2.30) |
2.095
(2.26) |
1.810
(2.36) |
0.788
(2.36) |
0.321
(2.30) |
- |
- |
| F-value |
1.276
(5.40) |
3.002
(6.25) |
2.640
(6.25) |
1.751
(5.40) |
0.042
(0.15) |
0.026
(0.05) |
6.601
(19.2) |
1.225
(5.40) |
- |
- |
|
