Table 2.

Hypothesis testing of Equations (2) and (3) through the F-Test. * means the F-Test was significant with 95% confidence.

	PCR	PLS
Mean R	−3.4	−9.4
Variance	189	700
Standard deviation	13.7	26.5
95% CI	−3.4 ± 7.6	−9.4 ± 14.7
Observations	15	15
Degrees of freedom	14	14
F	0.27
P (F < f) one tail	0.0099 *