Variation axd Correlation of Oats — Part II 



193 



Series 122 



rt c<> CO 



Totals 22 



64 70 36 15 9 3 1 



Totals 



0-1 



22 51 



5 











78 



1-2 



29 



53 11 



2 





1 





96 



2-3 





6 53 



11 



2 







72 



3-4 





6 



22 



9 







37 



4^5 







1 



3 



7 



1 



12 



5-6 









1 



1 



2 



4 



6-7 













1 



1 



300 



Fig. 171. — Correlation between average yield of culm -per 

 plant, in decigrams, subject; and average weight of 

 straw per culm of plant, in decigrams, relative 



r= .901 ± .007 



significant. In line 62 the coefficients are, in order of value: .884 ± .008 

 in series 68; .888 ± .008 in series 118; and .944 ± .004 in series 102. The 

 difference of the extremes is here .060 i .009, which is probably of some 

 significance. From these results it is evident that yield and weight of 

 straw are highly correlated in the culms of oat plants. This correlation 



Series 68 



0- 1 



1- 2 



2- 3 



3- 4 

 4^ 5 



5- 6 



6- 7 



7- 8 



8- 9 

 9-10 



Totals 



1-^ iM 



o t^ X -. o - ^1 CO Totals 



7 

 21 

 26 

 53 

 55 

 42 

 41 

 37 

 12 



6 



1 



3 



1 



3 



13 



5 



6 

 12 

 13 



1 



8 



21 



14 



1 

 17 

 22 

 11 



3 



2 



17 



18 



13 



4 



2 



2 

 12 



9 

 11 



1 

 11 

 14 



4 



1 



4 

 6 

 4 

 3 



1 

 1 



1 

 1 



1 

 1 



1 1 



4 21 31 44 54 56 34 31 17 2 2 



1 



300 



Fig. 172. — Correlation betiveen average yield of culm per plant, in decigrams, 

 subjed; and average weight of straw per culm of plant, in decigrams, relative 



r=- .884± .008 



