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Table 3 RSM of PET-CA expression

From: Meta-analysis on PET plastic as concrete aggregate using response surface methodology and regression analysis

Source

DF

Adj SS

Adj MS

F-Value

P-Value

Expression

9

1959.35

217.706

66.67

0.000

 Linear

5

601.27

120.253

36.83

0.000

  CA

1

18.55

18.546

5.68

0.023

  FA

1

53.14

53.137

16.27

0.000

  W/C

1

121.22

121.218

37.12

0.000

  PET(%)

1

186.53

186.534

57.12

0.000

  Size(mm)

1

52.10

52.097

15.95

0.000

 Square

1

343.39

343.390

105.16

0.000

  CA*CA

1

343.39

343.390

105.16

0.000

 2-Way Interaction

3

125.62

41.874

12.82

0.000

  CA*Size(mm)

1

35.48

35.476

10.86

0.002

  FA*PET(%)

1

58.31

58.313

17.86

0.000

  FA*Size(mm)

1

38.36

38.356

11.75

0.002

Error

33

107.76

3.265

  

Total

42

2067.11

   

RMSE

 

1.583

   

R2

 

0.9479

   

R2 adj

 

0.9337

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