CORRELATION 



103 



regard to relationships from among the general 

 population to which these fathers and sons belonged. 



Now we shall see later on that this is not the only 

 way of looking at the phenomenon of heredity, nor is 

 it the way which is most familiar to biologists. But 



62 



64- 



66 



68 



70 



72 



74 



76 



62 



64- 



66 



68 



70 



74* 



FIG. 9. DIAGRAM OF CORRELATION. 



it is important to remember that what the biometrician 

 means by amount of inheritance is a numerical value 

 which expresses the average degree of likeness between 

 a particular pair of relatives for example, fathers and 

 sons. 



