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Table 1 Inadequate and Quenouille-Addelman solutions for the data presented in Fig. 1a, b

From: A recurring error in evaluating the effects of different pesticides, pollutants and fertilizers with a zero level

Inadequate

Quenouille-Addelman solution

Source of variation

df

SS

MS

F

P

Source of variation

df

SS

MS

F

P

Fixed-effect solution for a completely randomized design based on the data presented in Fig. 1a

           

 Qualitative variable (A)

2

101.77

50.89

208.40

 > 0.01

Qualitative variable (A)

2

136.60

68.30

326.35

 > 0.01

 Quantitative variable (Z)

3

156.66

52.22

213.87

 > 0.01

Quantitative variable (Z)

3

156.66

52.22

249.52

 > 0.01

 A × Z

6

60.59

10.10

41.36

 > 0.01

A × Z

4

25.76

6.44

30.77

 > 0.01

 Error

12

2.93

0.24

  

Error

14

2.93

0.21

  

 Total

23

321.95

   

Total

23

321.95

   

Fixed effect solutions for a completely randomized design based on the data presented in Fig. 1b

           

 Qualitative variable (A)

2

64.48

32.24

179.94

 > 0.01

Qualitative variable (A)

2

84.20

42.10

274.14

 > 0.01

 Quantitative variable (Z)

3

255.79

85.26

475.89

 > 0.01

Quantitative variable (Z)

3

255.79

85.26

555.20

 > 0.01

 A × Z

6

19.87

3.31

18.48

 > 0.01

A × Z

4

0.10

0.03

0.16

0.95

 Error

12

2.15

0.18

  

Error

14

2.15

0.15

  

 Total

23

342.29

   

Total

23

342.24

   

Polynomial fixed effect solution for a completely randomized design based on the data presented in Fig. 1b

           

 Qualitative variable (A)

2

64.48

32.24

179.94

 > 0.01

Qualitative variable (A)

2

84.20

42.10

274.14

 > 0.01

 Quantitative variable (Z)

     

Quantitative variable (Z)

     

 Linear

1

206.66

206.66

1153.45

 > 0.01

Linear

1

206.66

206.66

1345.69

 > 0.01

 Quadratic

1

39.58

39.58

220.91

 > 0.01

Quadratic

1

39.58

39.58

257.73

 > 0.01

 Cubic

1

9.54

9.54

53.25

 > 0.01

Cubic

1

9.54

9.54

62.12

 > 0.01

  A × Z

     

A × Z

     

 Linear

2

12.16

6.08

33.93

 > 0.01

Linear

2

0.01

0.01

0.03

0.97

 Quadratic

2

5.71

2.86

15.93

 > 0.01

Quadratic

2

0.10

0.05

0.33

0.73

 Cubic

2

2.00

1.00

5.58

0.02

Error

14

2.15

0.15

  

 Error

12

2.15

0.18

  

Total

23

342.24

   

 Total

23

342.28