|
|
|
| Table
2.4 Elemental Discriminating |
||
| Ability in Principal Component Analysis |
||
| Elements |
| Percentage
of Total Variation |
| Sb, Sn, Cd |
| 83.8 |
| Sb, Sn, Cd, As |
| 96.1 |
| Sb, Sn, Cd, As,
Cu |
| 98.1 |
| Sb, Sn, Cd, As,
Cu, Bi |
| 99.6 |
| Sb, Sn, Cd, As,
Cu, Bi, Ag |
| 100 |
| Data from FBI’s
1373-bullet subset |