Table 2 First two PCs of the training dataset: eigenvalues, explained and cumulative variance, and loadings of the variables
PC | Initial eigenvalues | Factor loadings | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Total | % of Variance | Cumulative % | Si | K | Ca | Ti | Mn | Fe | Zn | Rb | Sr | Zr | |
1 | 4.987 | 49.875 | 49.875 | .884 | .901 | .337 | .917 | .055 | .918 | .232 | .766 | .703 | .678 |
2 | 1.412 | 14.120 | 63.995 | -.139 | -.045 | .789 | -.106 | .859 | .019 | .023 | -.129 | .022 | .013 |