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Table 4 Variance analysis of the depth

From: Optimization of PC micro-drilling using a continuous CO2 laser: an experimental and theoretical comparative study

Source

Sum of squares

df

Mean square

F-value

p-value

R2

Model

0.6496

9

0.0722

20.96

0.0003

0.9642

A-power

0.2813

1

0.2813

81.69

< 0.0001

Significant

B-exposure time

0.1058

1

0.1058

30.73

0.0009

 

C-FPP

0.1741

1

0.1741

50.55

0.0002

 

AB

0.0225

1

0.0225

6.54

0.0378

 

AC

0.0100

1

0.0100

2.90

0.1321

 

BC

0.0121

1

0.0121

3.51

0.1030

 

A2

0.0151

1

0.0151

4.38

0.0745

 

B2

0.0177

1

0.0177

5.15

0.0576

 

C2

0.0067

1

0.0067

1.94

0.2058