Multivariate Calibration and Model Integrity for Wood Chemistry Using Fourier Transform Infrared Spectroscopy

Table 1

Hypothesis testing of (2) through (a) -test and (b) -test.

(a) -test

	PCR	PLS
Mean	0.06	−0.49
Variance	55.5	92.6
Standard deviation	7.45	9.62
95% CI	0.06 ± 2.1	−0.49 ± 2.8
Observations	49	49
Degrees of freedom	48	48
value	1.67
for -test	0.0796

(b) -test

	PCR	PLS
Mean	0.06	−0.49
Variance	55.5	92.6
Standard deviation	7.45	9.62
95% CI	0.06 ± 2.1	−0.49 ± 2.8
Observations	49	49
Degrees of freedom	48	48
value	0.60
() one tail	0.0398
critical one tail	0.62

This means that the -test and -test were significant with 95% confidence.