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