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Table 10 Calculation results of K statistic

From: Digital Twin-based Quality Management Method for the Assembly Process of Aerospace Products with the Grey-Markov Model and Apriori Algorithm

Batch

A1

A2

…

A15

Model

Variance

\(\overline {S_j^2}\)

\(\lambda _{i,j}^{(r)}\)

K

1

8.691

9.571

…

13.672

S1

8.295

–

–

1.000

2

4.366

7.135

…

12.973

S1

11.157

8.295

1.345

0.544

3

7.978

4.715

…

16.948

S1

11.628

9.726

1.196

0.436

4

5.918

5.205

…

16.890

S1

15.927

10.360

1.537

1.081

5

5.310

7.491

…

14.223

S2

5.033

–

–

1.000

6

6.066

6.595

…

15.688

S2

7.766

5.033

1.543

0.794

7

4.178

7.442

…

12.792

S2

4.912

6.400

0.768

− 0.504

8

6.866

7.177

…

11.604

S2

3.052

5.904

0.517

− 1.338