Table 4.
The range, mean, and standard deviation of the number of different alleles observed in two-, three-, and four-person (p) mixtures amplified with low template DNA (LT-DNA) amounts*
| Type and template amount | N | Maximum | Minimum | Mean | Standard deviation (SD) | Mean -2 SD | Mean +2 SD |
|---|---|---|---|---|---|---|---|
|
2p less than 50 pg |
90 |
51 |
27 |
42.66 |
4.55 |
33.56 |
51.76 |
|
3p less than 50 pg |
41 |
66 |
42 |
53.00 |
5.39 |
42.23 |
63.77 |
|
4p less than 50 pg |
14 |
65 |
53 |
58.43 |
3.39 |
51.65 |
65.21 |
|
2p 50 pg and above |
99 |
54 |
27 |
44.77 |
3.68 |
37.41 |
52.13 |
|
3p 50 pg and above |
83 |
66 |
47 |
57.08 |
3.62 |
49.84 |
64.32 |
|
4p 50 pg and above |
30 |
75 |
59 |
66.80 |
4.53 |
57.74 |
75.86 |
|
2p all LT-DNA |
189 |
54 |
27 |
43.76 |
4.24 |
35.28 |
52.24 |
|
3p all LT-DNA |
124 |
66 |
42 |
55.73 |
4.68 |
46.37 |
65.09 |
| 4p all LT-DNA | 44 | 75 | 53 | 64.14 | 5.73 | 52.68 | 75.60 |
*Values for 10 pg, 15 pg, and 20 pg mixtures were not included as there were no purposeful three-person mixtures measured with those template amounts.