K = 4 cluster variance analysis table

clustering

deviation

F

Sig.

mean square

df

mean square

df

Pure technical efficiency

0.855

3

0.012

39

69.006

0.000

Scale efficiency

0.389

3

0.006

39

65.356

0.000

Final cluster center

clustering

1

2

3

4

Pure technical efficiency

0.547630

0.456247

0.975899

0.976681

Scale efficiency

0.663797

0.938604

0.508314

0.998160

Initial cluster center

clustering

1

2

3

4

Pure technical efficiency

0.487500

0.165950

0.961129

1.000000

Scale efficiency

0.477297

0.829316

0.304494

1.000000