Table 3 Fit summary for of CCD for AuNPs biosynthesis using Streptomyces flavolimosus cell-free supernatant as affected by temperature (°C), incubation period (days), HAuCl4 concentration (µg/mL) and initial pH level.

From: Artificial neural network approach for prediction of AuNPs biosynthesis by Streptomyces flavolimosus, characterization, antitumor potency in-vitro and in-vivo against Ehrlich ascites carcinoma 

Source

Sum of squares

Df

Mean square

F-value

P-value

Lack of fit tests

 Linear

254,400

20

12,718.18

55.46

0.0001*

 2FI

162,800

14

11,625.48

50.69

0.0002*

 Quadratic

9360.18

10

936.02

4.08

0.067

Source

Std. dev.

R2

Adjusted R2

Predicted R2

PRESS

Model summary statistics

 Linear

101.10

0.7206

0.6758

0.5828

381,500

 2FI

92.88

0.8207

0.7264

0.7071

267,800

 Quadratic

26.47

0.9885

0.9778

0.9392

55,565.78

  1. df degree of freedom, two factors interaction: 2FI.
  2. *Significant values.