W. R. Macdonell 
Fig. 4. Height of Criminals. 
185 
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Skew Curve 
ORIGIhf^ 
Height in inches. 
Normal Curve 
(6) Tests of Homogeneity. In order to see whetlier or not we are dealing with 
a homogeneous class, three frequency correlation tables (Tables IV. V. and VI. ; 
see pp. 217 — 219) were formed from the first batch of forms taken at random from 
Scotland Yard, and comprising particulars of 1306 ont of our 3000 criminals. 
These tables give the following results, the method of calculation being the same 
as before : 
TABLE 3. 
1306 Criminals. 
Standard Deviation 
Mean 
Head Length (cm.) ... 
Head Breadth (cm.) ... 
L. M. Finger (cm.) ... 
Height (ins.) ... 
Face Breadth (cm.) ... 
•6002 + -0079 
•5133 + -0068 
■5451 + -0072 
2-5906 + 0342 
•5022 + ^0066 
19-14.38 + -0112 
15-0302 + -0096 
11 -5244 + -0102 
65-4193 + -0407 
13-6350 + -0094 
Biometrika i 
16 
