ii4 Negro Migration 



DIAGRAM II. 



CORRELATIONS OF NEGRO *OT>ULATION INCREASE, 1900-1910 WITH 

 INCREASES IN THE CLASSES OF FARM WORKERS. 



& U) 



Regression lines plotted from 



the means of the systems as 



zero, in units proportional, to <®r <£? 



the standard deviations. j\s $r 



(2) 





0>" 



t &*■-; t5) 



'Z. NO 



1< 



tionship is therefore very close. 



By comparing the coefficient showing the relation between 

 increase in population and increase in farms, and that 

 between increase in population and increase in farm laborers 4 

 we see that while the relationship between increase in 

 farmers and population is very high, the relationship be- 

 tween increases in laborers and population is almost 



*This second correlation was worked out on the basis of 

 census figures as to increase in improved acreage by counties. 

 From this increase in improved acreage was subtracted the 

 amount of increase attributable to new independent farmers on 

 the basis of 25 acres each. The remainder was considered a 

 fairly accurate index of the increases or decreases in the acreage 

 operated by hired labor. 



