Variation and Correlation of Oats — Part II 



93 



If all the pairs of coefficients of correlation are compared (Table 3), 

 it is seen that there are but three pairs which differ by a greater amount 

 than .016, or by an amount greater than practical equality with their 

 probable errors. In the three pairs in which the difference is greater, 



Series 22 



i 



Totals 



0- 1 



1 7 8 



4 



4 

















24 



1- 2 



1 13 



6 



2 



4 



1 



3 











30 



2- 3 



1 2 



20 



12 



5 



5 



1 











46 



3- 4 





6 



30 



17 



10 



2 











65 



4- 5 





2 



21 



26 



14 



4 











67 



5- 6 





1 



6 



30 



30 



5 



1 









73 



6- 7 







4 



14 



19 



12 



2 









51 



7- 8 







1 



10 



32 



18 



6 



2 



2 





71 



8- 9 









5 



15 



34 



19 



1 







74 



9-10 









1 



19 



34 



21 



6 







81 



10-11 











3 



18 



19 



14 







54 



11-12 











1 



10 



23 



8 



1 





43 



12-13 











2 



5 



18 



11 



1 





37 



13-14 













3 



13 



13 



4 





33 



14-15 











1 



1 



12 



6 



3 



1 



24 



15-16 













3 



3 



14 



6 



1 



27 



16-17 















3 



7 



7 



1 2 



20 



17-18 















2 



6 



2 



2 



12 



18-19 

















4 



4 



2 



10 



19-20 

















2 



2 



1 



5 



20-21 

















1 



3 



2 



6 



21-22 

















1 





1 



2 



22-23 















1 





1 



2 



4 



23-24 

















1 



1 





2 



28-29 



















1 





1 



Totals 



8 23 39 



112 152 153 143 97 38 13 



862 



Fig. 73.* — Correlation between total yield of culm, in decigrams, subject; and 

 total height of culm, in centimeters, relative 

 T^ .854 ± .006 



*In this figure and in others marked with an asterisk, the classes containing no individuals are 

 omitted in the publication but were taken into account in the calculations. 



there is no case when it is greater than about three times the probable 

 error, the greatest difference being .130 ± .041. These differences are 

 not great, but in every one of the seven cases the higher coefficient of 

 the pair is in series 22, or when the culms are used as the units of 

 measurement. A certain small significance may therefore be attached to 

 these differences. 



