THE STATISTICAL STUDY OF VARIATION 



51 



50 



134 



167 



38 



10 



400 



Fio. 22. Correlation table for 400 plants of Sixty Day oats. Total yield of plant 

 in grams, subject. Number of culms per plant, relative. 1910. Coefficient of correla- 

 tion = 0.712 0.017. (From Love and Leiohly, 1914.) 



50 



134 



167 38 



10 



400 



Fio. 23. Correlation table for 400 plants of Sixty Day .oats. Average height of plant 

 in centimeters, subject. Number of culms per plant, relative. 1910. Coefficient of 

 correlation = 0.042 0.034. (From Love and Leighty, 1914.) 



V X -M X = - 



V X -M X = d x 



V, - My = -</ 



FIG. 24. Interpretation of the correlation table. 



