Table 2.
Comparison of principal component analyses. We compared the percentages of variance expressed by the principal components based on two datasets. The first dataset includes the variable TL, resulting in all individuals without the measurement for TL being excluded from the dataset (293 individuals; 13 variables). The second dataset excludes the variables TL, so all individuals were included in the analysis (329 individuals; 12 variables). The PCs were selected if the eigenvalues were >1, based on varimax rotations. The total loading cumulative percentage is in bold, and we retained the dataset including TL.
| PCs | Eigenvalue | Percentage of Variance | Cumulative Percentage |
|---|---|---|---|
| Including Tail Length | |||
| PC1 | 3.98 | 30.67 | 30.67 |
| PC2 | 1.77 | 13.67 | 44.34 |
| PC3 | 1.03 | 7.90 | 52.24 |
| PC4 | 1.02 | 7.84 | 60.09 |
| Excluding Tail Length | |||
| PC1 | 3.83 | 31.90 | 31.90 |
| PC2 | 1.56 | 13.02 | 44.92 |
| PC3 | 1.03 | 8.56 | 53.49 |