Bauhaus-Universität Weimar

VII.] DISCUSSION OF THE DATA OF STATURE. 129 
four brothers, and therefore giving an increased weight 
to those Fraternities, hut in other respects the system 
was hardly objectionable. The introduced error must 
be so slight as to make it scarcely worth while now to 
go over the work again. By the system adopted, I 
found the Prob. Difference to be 1‘55, which divided 
by \/ 2 gives 6 =110 inch. 
Thus far we have dealt with the special data only. 
The less trustworthy R.F.F. give larger values of b in 
every case. An epitome of all the results appears in 
the following table 
Methods and data. 
Values of 6 obtained by different methods 
and from different data. 
From Special Data. 
From R.F.F. datai 
(1) From Fraternities each 
containing the same number of 
persons .......................... 
1-07 
1-38 
(2) From the mean value of 
Fraternal Regression............ 
0-98 
131 
(3) From the Variability of 
Fraternal Regression........... 
MO 
1T4 
(4) From Pairs of Brothers 
taken at random.................. 
MO 
1-35 
Mean............... 
106 
The data used in the four methods are somewhat 
different. In (1) I could not deal with small Fraterni- 
1 The R.F.F. results were obtained from brothers only and not from 
transmuted sisters, except in method (2), where the paucity of the data 
compelled me to include them. 
K
        

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