86 .Estimation of the General Intelligence of School Children 
Table VII. Intelligence and Place in Form. The correlation here is lower 
than in the corresponding result for the examination. This difference also appears 
when corrections are made for constant Age and constant Form. The correlation, 
97 = — '624, is found by the correlation ratio method. 
Table VIII Age and Place in Form. This correlation when obtained by the 
correlation ratio method is rather higher than that of Table II. This, if correct, 
may be due to greater care and perseverance which are expected from the older 
boys. The method of moments, however, gives a coefficient slightly smaller than 
that obtained from Table II by the same process. 
Table IX. Form and Place in Form. The correlation ratio, n = '009, is 
negligible, and will be taken as zero. The slight difference in the distribution of 
Place in Form in these three Tables from that in Tables I, II and III is due to 
several cases of equality in the examination. 
The coefficients for Tables IV to IX are : — 
Intelligence and Place in Form, ... 
Age and Place in Form, ... 
n 2 
?34 = 
= - -624 
•294 (77) 
•033 (r) 
0 
•343 
•547 
•602 
Form and Place in Form, 
Age and Intelligence, 
Form and Intelligence, 
Age and Form, 
Correlation of General Intelligence and Place in Form for constant Age and 
constant Form : — 
(a) With larger value of r 13 p K =- "810 ± -017. 
(b) „ smaller „ p 12 = - -747 ± -021. 
(v) General Intelligence and Place in Form. Second Investigation. 
TABLE X. 
General Intelligence and Place in Form. 
General Intelligence. 
o 
ID 
O 
cS 
4-8 
9 
10 
11 
12 
13 
u 
15 
16—19 
Totals 
•0+ 
4 
3 
6 
i 
4 
5 
23 
■1 
2 
1 
4 
6 
4 
2 
2 
4 
25 
'2 
1 
1 
3 
5 
6 
3 
1 
2 
22 
2 
9 
5 
1 
6 
2 
25 
'i 
2 
2 
2 
5 
6 
4 
1 
1 
23 
1 
3 
8 
5 
6 
2 
25 
■6 
2 
2 
5 
7 
4 
3 
23 
"7 
2 
4 
4 
6 
4 
2 
2 
24 
■8 
2 
2 
2 
10 
3 
3 
1 
23 
•9 
5 
3 
0 
7 
2 
1 
1 
25 
Totals 
14 
14 23 
1 
«. 
46 
37 
21 
8 
14 
238 
