Table 4 Actual and estimated distances

d _ij

5

5

5

${\hat{d}}_{\mathit{\text{ij}}}$

4.5521

4.6815

5.8643

d _ij

10

10

10

${\hat{d}}_{\mathit{\text{ij}}}$

9.5012

10.2626

13.6512

d _ij

20

20

20

${\hat{d}}_{\mathit{\text{ij}}}$

15.8156

16.1516

23.2995

d _ij

50

50

50

${\hat{d}}_{\mathit{\text{ij}}}$

24.3975

23.7469

31.6195

d _ij

20

10

50

${\hat{d}}_{\mathit{\text{ij}}}$

17.2376

8.6479

27.7609