Factors

Inhibition diameter

Surface tension

Yield


DF

Sum of squares

Fvalue

pvalue

DF

Sum of squares

Fvalue

pvalue

DF

Sum of squares

Fvalue

pvalue


X
_{1}

1

603.501

30.050

0.031*

1

55.900

21.580

0.043*

1

1.387

27.630

0.034*

X
_{2}

1

61.200

3.050

0.223

1

17.040

6.580

0.124

1

0.158

3.160

0.217

X
_{3}

1

0.300

0.010

0.913

1

0.520

0.200

0.697

1

0.001

0.020

0.891

X
_{4}

1

281.301

14.010

0.064

1

22.687

8.760

0.097

1

0.790

15.750

0.058

X
_{5}

1

643.868

32.060

0.029*

1

222.741

86.000

0.011*

1

1.346

26.820

0.035*

X
_{6}

1

397.901

19.810

0.046*

1

204.188

78.840

0.012*

1

1.009

20.100

0.046*

X
_{7}

1

48.400

2.410

0.260

1

8.500

3.280

0.211

1

0.080

1.590

0.334

X
_{8}

1

96.900

4.820

0.159

1

3.307

1.280

0.375

1

0.235

4.680

0.163

Lack of fit

4

52.829

0.660

0.677

4

43.422

4.190

0.201

4

0.133

0.660

0.675

Pure error

2

40.166
  
2

5.180
  
2

0.100
  
Total (corr.)

14

2226.37
  
14

583.489
  
14

5.242
  
R
^{2}
  
95.82
   
91.67
   
95.34
 
Adjusted R^{2}
  
90.25
   
80.56
   
89.60
 
 X_{1}: Temperature; X_{2}: time; X_{3}: agitation speed; X_{4}: inoculum concentration; X_{5}: sugar cane molasses concentration; X_{6}: peptone concentration; X_{7}: yeast extract concentration; X_{8}: K_{2}HPO_{4} concentration; DF: degrees of freedom; *significant at p < 0.05