CARL SCHIOTZ. 



.-N. Kl. 



Table i d. 

 Hiçher schools. Girls. 



Table i e. 

 He i S'il f. Bovs. 



Tn regard to statistical methods used I must confine myself to refer 

 to my earlier writings, and for more exact instruction to special pro- 

 fessional books (G u n n a r J a h n, W. J o h a n n s e n, Z i m m e r m a n) . 

 "Standard deviation" and the "coefficient of variability'' built upon it, 

 is without doubt the best measurement for the variations. 



After the tables i the curves fig. i are constructed. It is the general 

 rule for all average number curves "' that the perpendicular lines mark 



' Where nothing else is marked. 



