56 



American Statistical Association, 



Increase of this index has been the general result of the 

 training, except in the higliest percentile grades, and the 

 increase has been greatest at tlie lower grades. The value at 

 the 30 per cent grade after the training (0.0495) approaches 

 the 50 ])er cent value before the training (0.0499), and the 

 50 per cent value after tiie training (0.0530) approaches the 

 70 per cent value before the training (0.0536). 



Strength- Weight Index. The extreme values observed are, 

 before the training, 6.4 and 2.87, respectively ; after the 

 training, 7.33 and 3.6, respectively. Table XIV gives the 

 values of the following percentile grades; — 



TABLE XIV. Strength-Weight Index. 



Increase of this index has taken place at all the grades. 

 The value of the 10 per cent grade after the training (4.36) 

 reaches nearly the 50 per cent value before the training 

 (4.40), while the 50 per cent value after the training (5.48) 

 is about equal to the 85 per cent grade before the training. 



Vital Strength- Weight Index. The extreme values are, 

 before the training, 0.415 and 0.108, respectively; after the 

 training, 0.527 and 0.166, respectively. Table XV shows 

 the values of the following percentile grades : — 



TABLE XV. Vital Strength-Weight Index. 



Percentile Grade. 



Before the train- 

 ing 



After 7 months' 

 training 



We find that the value of the 10 per cent grade after the 

 training (0.2150) approaches the 50 per cent value before 

 the training (0.2180), and that the 50 per cent value after 



