Table 3.

Analysis of variance (ANOVA) of the model for protein amount of Tetraselmis striata

Source	Sum of squares	Degree of freedom	Mean square	F-value	p > F
Model	622.68	9	69.19	8.31	0.0033
X1: Light intensity	3.93	1	3.93	0.47	0.5116
X2:Temperature	0.37	1	0.37	0.045	0.8373
X3: Agitation	13.38	1	13.38	1.61	0.2405
X1X2	0.097	1	0.097	0.012	0.9167
X1X3	4.22	1	4.22	0.51	0.4968
X2X3	36.47	1	36.47	4.38	0.0697
${\displaystyle X_1^2}$	342.96	1	342.96	41.21	0.0002
${\displaystyle X_2^2}$	2.16	1	2.16	0.26	0.6244
${\displaystyle X_3^2}$	309.36	1	309.36	37.17	0.0003
Residual	66.58	8	8.32
Lack of fit	52.80	5	10.56	2.30	0.2626
Pure error	13.79	3	4.60
Cor. total	689.27	17
Std. dev.	2.88	R-squared	0.9034
Mean	10.42	Adj. R-squared	0.7947
C.V.%	27.69	Pred. R-squared	0.3795
Press	427.72	Adeq. precision	7.279