Table 10 Quality of the representation of loadings and scores (observations and variables) with respect to PCA axes

From: New dating approach based on the petrographical, mineralogical and chemical characterization of ancient lime mortar: case study of the archaeological site of Hippo, Annaba city, Algeria

 

PC1

PC2

PC3

PC4

PC5

Loadings

 Quartz

0.161

0.811

0.006

0.022

0.000

 Calcit

0.860

0.083

0.050

0.007

0.000

 Rock fragments

0.747

0.132

0.121

0.000

0.000

 Porosity

0.745

0.179

0.045

0.012

0.018

 B/A

0.753

0.162

0.009

0.075

0.001

 Density

0.813

0.109

0.056

0.000

0.022

Scores

 HFO1

0.891

0.067

0.001

0.042

0.000

 HFO2

0.580

0.197

0.222

0.001

0.000

 HFO3

0.877

0.074

0.000

0.048

0.001

 HB1

0.405

0.574

0.019

0.000

0.001

 HB2

0.278

0.695

0.018

0.004

0.005

 HB3

0.357

0.628

0.015

0.001

0.000

 HFG1

0.554

0.351

0.081

0.004

0.010

 HG1

0.862

0.099

0.003

0.035

0.000

 HG2

0.954

0.030

0.014

0.002

0.000

 HG3

0.848

0.013

0.135

0.001

0.004

 HT1

0.547

0.372

0.002

0.074

0.004

 HT2

0.350

0.514

0.089

0.045

0.002

 HT3

0.276

0.615

0.017

0.000

0.092

 HT4

0.436

0.502

0.043

0.009

0.010

 HM1

0.922

0.014

0.020

0.030

0.014

 HM2

0.584

0.349

0.024

0.036

0.007

 HM3

0.624

0.261

0.056

0.050

0.009

 HTR1

0.202

0.420

0.325

0.051

0.002

 HTR2

0.382

0.612

0.001

0.002

0.003

 HTR3

0.507

0.481

0.009

0.001

0.003

  1. The values in bold Correspond, for each variable to the factor (axis) for which the squared cosine is the greatest
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