Variation and Correlation of Oats — Part II 



207 



For average weight of kernels per plant correlated with average length 

 of head per plant (Figs. 193 to 198), in line 50, for series 63 the coefficient 

 is .081 ± .043 and for series 122 it is .535 ± .028. The difference here 

 is .454 ± .051, which is about nine times its probable error. In line 62 

 the extreme difference is .341 ± .044, which is nearly eight times its 

 probable error. 



Series 63 



<M CO ^ O O 



9-10 

 10-11 

 11-12 

 12-13 

 13-14 

 14-15 

 15-16 

 16-17 

 17-18 

 18-19 

 19-20 

 20-21 

 21-22 

 22-23 

 23-24 

 2^25 

 25-26 

 26-27 



Totals 









1 







1 













2 



1 



1 

 2 



1 



2 

 3 



1 







1 





2 





3 





3 



7 



5 



2 



4 



1 



1 





2 



1 



3 





7 



4 



7 



2 



2 





1 



1 



2 



4 



2 



1 



5 



9 



6 



1 











2 



1 



8 



5 



7 



3 



2 









2 



2 



2 



1 



6 



5 



3 



3 





1 







1 



3 



5 



3 



7 



1 



2 









2 





2 



2 



3 



1 



3 



4 



1 





1 





1 



2 





4 



3 



1 



1 



1 1 



1 





1 



1 



2 





2 



3 



1 



1 









1 



1 



2 



1 



1 







1 









1 



1 



1 



2 



2 



1 









6 14 20 21 39 42 45 24 19 



Totals 



2 







2 



5 



7 

 28 

 28 

 32 

 28 

 24 

 23 

 18 

 14 

 12 



7 



4 



2 



2 



238 



Fig. 193. — Correlation between average iveight of kernels per plant, 

 in milligrams, subject; and average length of head per plarit, in centi- 

 meters, relative 



r = .081 ± .043 



