Table 4 Analysis of variance.

From: Design and experiment of air-suction drum-type seedling seeder for irregular-shaped vegetable seeds

Source of variance

Cavitation rate

Square sum (e.g. equation of squares)

(Number of) degrees of freedom (physics)

F-value

P-value

Mould

25.3

9

15.21

0.0001

X1

5.03

1

27.21

0.0004

X2

7.05

1

38.13

0.0001

X3

2.12

1

11.48

0.0069

X1 × 2

0.1513

1

0.8185

0.3869

X1 × 3

0.1512

1

0.8185

0.3869

X2 × 3

0.0012

1

0.0068

0.9361

X12

6.76

1

36.59

0.0001

X22

3.47

1

18.77

0.0015

X32

2.54

1

13.75

0.0041

Residual

1.85

10

  

Incoherent

1.06

5

1.34

0.3767

Inaccuracies

0.7883

5

  

Aggregate

27.15

19

  
  1. P < 0.01 (highly significant, **), P < 0.05 (significant, *).
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