(b) Cefoperazone vial

Parameters	PLSR	Linear SVR	Reported HPLC method∗∗
Mean	98.17	99.33	99.40
SD	1.078	0.993	1.317
Variance	1.161	0.985	1.736
n	6	6	6
Student's t-test∗ (2.228)	0.108	0.914	—
F-test∗ (5.050)	1.223	1.327	—

^∗The values between parenthesis are corresponding to the theoretical values of t and F (P = 0.05).

^∗∗Reference method is HPLC [15].