Variation and Correlation of Oats — Part II 



149 



For average yield of culm per plant correlated with average weight 

 of kernels per plant (Figs. 103, 80, 105, 118), the coefficient for series 

 1219 is .539 ± .028, which is .046 ± .040 higher than that for series 1221. 

 This difference is only a little more than the probable error. For series 

 1257 the coefficient is .563 ± .027, which is .156 ± .042 higher than that 

 for series 1259. This difference is less than four times its probable 

 error. 



Series 1259 



<S) O 1— I 



4 



I I I I 

 ^ 2 S g Totals 



0- 1 



1- 2 



2- 3 



3- 4 



4- 5 



5- 6 



6- 7 



7- 8 



8- 9 

 9-10 



10-11 

 11-12 

 12-13 

 13-14 

 14-15 

 15-16 

 16-17 



Totals 





1 



















1 



1 























1 



1 





1 



2 





1 



1 





1 



4 



1 



2 



1 



1 













1 



1 



3 



2 



5 



1 





1 









1 



5 



5 



4 



2 



2 



1 





1 



1 





2 



8 



7 



1 



2 



1 







1 



5 



2 



7 



12 



3 



1 



2 









1 



5 



14 



7 



4 



1 



1 











5 



12 



10 



6 



3 











1 



4 



9 



10 



3 





1 











1 



9 



10 



5 



6 



1 











1 



7 



9 



10 



4 













1 



1 



9 

 2 

 1 



1 



4 

 3 



1 



2 

 1 



1 



1 1 

 1 







11 31 76 90 42 25 11 1 



1 

 2 



7 



10 



14 



20 



23 



33 



33 



36 



28 



32 



31 



15 



9 



4 



2 



300 



Fig. 1 18. — Correlation between average yield of culm per plant, in decigrams, 

 subject; and average weight of kernels per plant, in milligrams, relative 

 r=- .407 ± .032 



