Feb. 17,1923 
Correlations Between Wheat and Flour 
53 i 
published, giving the frequency distribution typical for each pair of 
characters. Following each table are tabulated summaries of correlation 
coefficients pertaining to the characters correlated in the preceding table. 
The calculation of the coefficients of correlation was carried to the sixth 
decimal place and recorded to the fourth. 
ANALYSIS OF DATA 
PROTEIN CONTENT IN WHEAT AND FLOUR 
From the nature of these two values a very close relation between them 
may be anticipated. The degree of that relationship is of interest. 
[Table I .—Correlation between protein content in the wheat and the flour of Minnesota 
spring wheats of commercial varieties 
Table II .—Correlation coefficients for protein content in the wheat and the flour 
Kind of wheat. 
Number Coefficient 01 correla- 
of samples. tion. 
Commercial varieties: 
Colorado spring wheats. 
Minnesota spring wheats.... 
North Dakota spring wheats, 
Montana spring wheats. 
Kansas winter wheats. 
Minnesota winter wheats.... 
Montana winter wheats. 
Ohio winter wheats. 
Idaho winter wheats. 
Pure strains: 
Minnesota spring wheats- 
North Dakota spring wheats. 
Wisconsin winter wheats.... 
Ohio winter wheats. 
48 
208 
119 
34 
47 
43 
9 1 
o. 8036 dto. 0344 
. 9i20dt . 0079 
. 9161± . 0100 
. 97io± . 0066 
.89571b .0194 
.92161b .0154 
• 9 2 59± • 0101 
• 943 8 ± • 0074 
. 9728 ± . 0046 
48 
28 
7 
25 
. 8921± . 0199 
. 9686± . 0078 
. 88141b . 0571 
. 91481b . 0220 
