52 



American Statistical Association. 



were, before the training, 311 and 156.5 kilos., respectively ; 

 after the training, 409 and 202.5 kilos., respectively. Table X 

 gives the value of the following percentile grades : — 



TABLE X. TOTAL Strength. 



This table shows that the total strength of the 10 per cent 

 grade after the training (237.5) surpasses the 50 per cent 

 grade before the training (230.5), and approaches the 60 per 

 cent grade value (243.5). The 50 per cent value after the 

 training (293) nearly equals the 90 per cent value before the 

 training (293.5), and the 70 per cent value after the training 

 (313) is beyond the 95 per cent value before the training 

 (810). 



It is of interest to study the ratio of some of the items 



mentioned. 



W 

 Ratio of weight and height, i. e., — (TT'"= weight in kilo., 



^^ height in centimetres) expresses how much weight an 



individual possesses for every centimetre of his stature ; for 



W 

 instance, —=0.340, i. e., 0.340 kilos, for each centimetre of 



stature. For the sake of convenience this ratio will be spoken 

 of under the term loeight-height index. Besides, we present 

 tables indicating the influence of the training upon the fol- 

 lowing indices : — 



(L C \ 

 ), i. c, 



vital capacity-weight index, or, for brevity's sake, vital index. 



Ratio of total strength (kilos.) and weight [~.y 1, i. e., 

 strength-weight index. 



The product obtained by multiplying vital index by 

 strength-weight index ( — -^, — ), i. e., vital strength-weight 

 index. 



