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Table 8 Principal Component Analysis, crossvalidation, eigenvalues and related percentages (after log-ratio, −As), using MVA add-in for Excel by R.G. Brereton

From: Rings or daggers, axes or fibulae have a different composition? A multivariate study on Central Italy bronzes from eneolithic to early iron age

N. PCs

RSS

PRESS

E-value

%

#1

165.930

175.847

0.914

41.346

#2

109.555

148.885

0.440

19.927

#3

55.506

68.195

0.422

19.105

#4

20.040

23.488

0.277

12.538

#5

6.479

7.981

0.106

4.793

#6

1.64E-05

n/a

0.051

2.291

Total SS

5017.054

5017.054

  
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BMC Chemistry

ISSN: 2661-801X

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