Source

Sum of squares

Degrees of freedom

Middle square

F-ratio

P-value

A: Fermentation time

8.30281

1

8.30281

11.81

0.0026

B: pH

79.1911

1

79.1911

112.67

0

C: Concentration

40.2753

1

40.2753

57.3

0

D: Time of hydrolysis

99.7578

1

99.7578

141.93

0

AB

0.945313

1

0.945313

1.34

0.2596

AC

1.55761

1

1.55761

2.22

0.1522

AD

2.07061

1

2.07061

2.95

0.1015

BC

0.227813

1

0.227813

0.32

0.5755

BD

48.2653

1

48.2653

68.67

0

CD

0.73813

1

0.73813

1.05

0.3177

Blocks

0.01362125

1

0.01362125

0.02

0.8907

Total error

14.0568

20

0.702842

Total

295.402

31

Description

Value

R-Square

95.2412

Standard error

0.838357

Absolute error

0.492891