Variation and Correlation of Oats — Part II 



131 



When the average weight of kernels per plant is correlated with the 

 average height of plant (Figs. 106 to 109), the highest coefficient is again 

 found in series 1200, where it is .654 ± .022. The lowest is again in 

 series 1219, where it is .553 ± .027. The difference is here .101 ± .035, 

 which appears rather large but in fact is less than three timeS its 

 probable error. 



Series 1200 



Totals 



CO ^ 

 O lO 



CO CO 



lO o 

 kO CD 



2 14 19 35 53 68 55 36 12 5 1 



Totals 



10-11 



1 1 



















2 



11-12 





1 





1 













2 



12-13 





1 



1 















2 



13-14 





2 





1 







1 







4 



14-15 



1 4 





2 





1 











8 



15-16 



2 



1 



1 















4 



16-17 



1 



2 



5 



2 



2 











12 



17-18 



1 



4 



2 



2 



1 



2 









12 



18-19 



1 



1 



5 



2 



3 



1 









13 



19-20 



1 



2 



3 



6 



6 



3 









21 



20-21 





3 



3 



9 



.6 



1 









22 



21-22 





1 



1 



8 



5 



7 









22 



22-23 







8 



8 



14 



4 



3 







37 



23-24 





1 



1 



7 



6 



6 



2 







23 



24-25 



1 







2 



6 



5 



3 



2 



1 



20 



25-26 



1 





1 



3 



6 



6 



5 



2 





24 



26-27 



1 





1 





3 



5 



7 





1 



18 



27-28 







1 





2 



7 



1 



4 



2 



17 



28-29 









1 



5 



1 



7 



1 



1 



16 



29-30 











2 



6 



2 



1 



1 



12 



30-31 













1 



4 







5 



31-32 















1 



2 





3 



32-33 









1 













1 



300 



Fig. 106. — Correlation between average weight of kernels per plant, in 

 milligrams, subject; and average height of plant, in centimeters, rela- 

 tive. Great American 



r-= .654 ± .022 



