Biology Reference
In-Depth Information
Table 5. Significant variables (V) in the Multiple regression analysis. Probability (P) and
coefficient of determination (R 2 ) values are listed.
R 2
V
Description
P
15
Greatest width between zygomatic processes
0.0000
0.0861
22
Greatest length of left post temporal fossa from post orbital bone
0.0009
0.331
28
Length from edge of lacrimal bone to end of postorbital
0.0039
0.0241
30
Greatest width of internal nares
0.0051
0.0044
13
Least supraorbital width
0.0067
0.021
11
Least supraorbital width
0.019
0.0154
37
Length of left mandibular fossa
0.0236
0.0143
26
Minor diameter of left temporal fossa proper
0.0251
0.014
The multiple regression equation obtained was:
Age = 0.0887 (V1)+0.3624(V2)+1.976(V3)+7.091(V6)+0.1471(V9)-
5.040(V11)+2,616(V12)+3.601(V13)-7.608(V15)-3.021(V19)-1.608(V21)
+6.898(V22)-0.4529(V23)+5.767(V26)-0.1168(V27)+14.12(V28)
0.09582(V29)-
11.33(V30)+1.407(V33)+0.01818(V35)-5.521(V37)+0.4650(V38)-
3.964(V41)+1.577(V42)+ 46.24
Table 6. Observed and estimated age values by means of the multiple regression
equation.
Individual
Observed age
Estimated age
Residual
Absolute error
1
31
28.845
2.155
6.952
2
44.67
41.559
3.111
6.964
3
15.33
15.762
-0.432
2.82
4
16.67
20.342
-3.672
22.029
5
19.33
28.158
-8.828
45.67
6
14
10.54
3.46
24.717
7
36
29.579
6.421
17.837
8
30
18.059
11.941
39.802
9
15
11.669
3.331
22.204
10
1
-2.272
3.272
327.238
11
23,33
22.429
0.901
3.86
12
6
15.073
-9.073
151.209
13
17.33
16.934
0.396
2.287
14
17.33
21.461
-4.131
23.834
15
27
28.769
-1.769
6.553
16
5
6.532
-1.532
30.64
17
37
34.651
2.349
6.348
18
1
3.16
-2.16
215.964
19
4
3.978
0.022
0.561
20
21
32.793
-11.793
56.157
21
20.33
20.642
-0.312
1.537
22
3
4.163
-1.163
38.782
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