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. 2023 Mar 29;13:5158. doi: 10.1038/s41598-023-32413-x

Table 4.

ANOVA results for Cd removal using a quadratic model from CCD.

Source Sum of squares df Mean square F-value p-value
Model 1685.60 14 120.40 124.57  < 0.0001 Significant
A 205.92 1 205.92 213.06  < 0.0001
B 843.72 1 843.72 872.96  < 0.0001
C 25.83 1 25.83 26.73 0.0001
D 7.59 1 7.59 7.86 0.0134
AB 8.85 1 8.85 9.16 0.0085
AC 6.38 1 6.38 6.60 0.0214
AD 0.1406 1 0.1406 0.1455 0.7082
BC 4.52 1 4.52 4.67 0.0472
BD 5.64 1 5.64 5.84 0.0289
CD 0.3906 1 0.3906 0.4042 0.5345
A2 388.08 1 388.08 401.53  < 0.0001
B2 236.51 1 236.51 244.71  < 0.0001
C2 90.00 1 90.00 93.12  < 0.0001
D2 30.90 1 30.90 31.97  < 0.0001
Residual 14.50 15 0.9665
Lack of fit 12.62 10 1.26 3.37 0.0963 Not significant
Pure error 1.88 5 0.3750
Cor total 1700.10 29