Table 3 Response surface central composite design and experimental and predicted responses.

From: Simultaneous optimization of parameters influencing organic mulch test using response surface methodology

Variables

Response

Penetrometer (kg/cm2)

Wind Erosion (g/m2 h)

Run

A

B

C

D

Experimental

Predicted

Experimental

Predicted

1

5

14

14

8.5

1.1

1.23

24.60

24.66

2

7

14

14

8.5

1.6

1.60

21.99

22.20

3

5

18

14

8.5

1.5

1.49

24.20

26.80

4

7

18

14

8.5

1.7

1.60

21.00

20.70

5

5

14

18

8.5

1.7

1.63

23.10

22.00

6

7

14

18

8.5

1.6

1.71

20.97

20.88

7

5

18

18

8.5

1.9

1.79

22.40

22.00

8

7

18

18

8.5

1.8

1.87

18.90

19.15

9

5

14

14

10.5

1.6

1.61

18.50

18.60

10

7

14

14

10.5

2.1

2.00

15.60

15.70

11

5

18

14

10.5

2

1.85

18.15

18.30

12

7

18

14

10.5

2.3

2.27

15.12

15.44

13

5

14

18

10.5

2

1.97

17.42

17.90

14

7

14

18

10.5

2.1

2.15

15.80

15.09

15

5

18

18

10.5

2.1

2.11

16.30

16.63

16

7

18

18

10.5

2.5

2.45

15.00

14.60

17

4

16

16

9.5

1.5

1.50

22.00

23.22

18

8

16

16

9.5

2

1.97

15.10

15.80

19

6

12

16

9.5

1.5

1.50

22.20

22.05

20

6

20

16

9.5

2

1.97

20.31

20.70

21

6

16

12

9.5

1.7

1.59

21.50

21.55

22

6

16

20

9.5

2.2

2.18

20.15

20.45

23

6

16

16

7.5

1.5

1.42

18.30

19.67

24

6

16

16

12.5

2.3

2.22

11.42

10.76

25

6

16

16

9.5

1.6

1.60

20.00

21.00

26

6

16

16

9.5

1.5

1.60

20.00

21.00

27

6

16

16

9.5

1.6

1.60

20.00

21.00

28

6

16

16

9.5

1.6

1.60

20.00

21.00

29

6

16

16

9.5

1.6

1.60

20.00

21.00

30

6

16

16

9.5

1.6

1.60

20.00

21.00

Back to article page