526 



Table 169.- 



MEMOIRS NATIONAL ACADEMY OF SCIENCES. 



[Vol. XV, 



-Comparison of officers' training camps — Medians, first and third quartiles, and quartile deviations — Examina- 

 tion a — 22 stations (third series) and Engineer reserve officers' training camp at Lee. 



■ Average. 



a Including Engineer officers* training camps. 



Fully as obvious differences are to he noted in table 1 70. Percentages of A grades range 

 from 49.7 per cent to 15.3 per cent, and percentages of A and B grades from 79.5 per cent to 



21. 4 •/■> 3A.5 ■/. 44.1°/. 



V////M^XS 



ENGINEERS 



35. Aj. 



35.9°/. 



ARTILLERY 



0.5J, 



Ah.ZJ. 



w////////////m 



$i.<yj. 



ZA.2J. 



m®mm*30{ 



INFANTRY 



• 



*fc BELOW B 



io B OR A 





□ 



Fi&. 26. Comparison of infantry (8,573), artillery (3,707), and engineer (1,505) candidate officers, showing percentages in each letter grade. 



46.9 per cent. In the 11 better camps, as a whole, the percentage of A grades is 38.4 per cent, 

 and that of A and B grades 71.9 per cent, as contrasted with percentages for the 11 poorer camps 

 of 20.7 per cent of A grades and 53.6 per cent of A or B grades. This discrepancy in percent- 

 ages of high-grade cases is even more important for its bearing on the efficiency of the several 

 training camps than differences in the central tendencies of the groups, since the main requisite 



