Table 3.

Sequential model sum of squares of polynomial models.

Source	Mean square	Sum of squares	Df	p-value	F-value
Linear vs. Mean	0.03	0.09	3	0.8	0.3
Mean vs. Total	501.3	501.3	1
2FI vs. Linear	0.02	0.1	3	0.9	0.2
Quadratic vs. 2FI	0.5	1.4	3	< 0.0001	2784.7	Suggested
Residual	0.0001	0.0004	4
Cubic vs. Quadratic	0.0002	0.001	4	0.2	2.5	Aliased
Total	27.9	502.9	18