WHAT MAKES THE PRICE OF OATS 
27 
APPENDIX A 
OAT AND WHEAT STATISTICS AND CALCULATIONS 
Table I. — Trend of oat production in the United States 1881 to 1913 
Year 
V 
Produc- 
tion * 
X 
Origin 
1897 
z2 
xy 
Straight- 
line trend 
1881 to 
1913 2 
1881 
Million 
bushels 
416 
488 
571 
583 
629 
624 
659 
701 
751 
523 
738 
661 
639 
662 
824 
780 
791 
843 
926 
914 
778 
1,053 
869 
1,009 
1,090 
1,036 
805 
851 
1,068 
1,186 
922 
1,418 
1,122 
-16 
-15 
-14 
-13 
-12 
-11 
-10 
-9 
-8 
-7 
-6 
-5 
-4 
-3 
-2 
-1 

+1 
+2 
+3 
+4 
+5 
+6 
+7 
+8 
+9 
+10 
+11 
+12 
+13 
+14 
+15 
+16 
256 
225 
196 
169 
144 
121 
100 
81 
64 
49 
36 
25 
16 
9 
4 
1 

1 
4- 
9 
16 
25 
36 
49 
64 
81 
100 
121 
144 
169 
196 
225 
256 
-6, 656 
-7, 320 
-7, 994 
-7, 579 
-7, 548 
-6, 864 
-6, 590 
-6, 309 
-6, 008 
-3, 661 
-4, 428 
-3, 305 
-2, 556 
-1,986 
-1,648 
-780 

+843 
+1, 852 
+2, 742 
+3, 112 
+5, 265 
+5, 214 
+7, 063 
+8, 720 
+9, 324 
+8, 050 
+9. 361 
+12,816 
+15,418 
+12, 908 
+21, 270 
+17, 952 
Million 
bushels 
496 
1882 
516 
1883 
536 
1884. 
556 
1885 
576 
1886 . . 
596 
1887 . 
616 
1888 
636 
1889 
656 
1890 
676 
1891 
696 
1892 
716 
1893. 
736 
1894.. 
756 
1895 . ... 
776 
1896 
796 
1897 
3 816 
1898 
836 
1899 
856 
1900 
876 
1901 
896 
1902 
916 
1903. . 
936 
1904 . 
956 
1905 
976 
1906 
996 
1907 
1,016 
1908 
1,036 
1909 
1,056 
1910 
1,076 
1911... 
1,096 
1912 
1,116 
1913 
1,136 
Total 
26, 930 
816 
2,992 
+141, 910 
-81, 232 
Sum 
+60, 678 
Slope (60,678 divided by 2,992) _. 
= +20 
i U. S. Dept. Agr. Yearbooks. 
2 For discussion of method see A Study of Statistical Method, by W. M. Persons in Review of Economic 
Statistics, preliminary vol. 1, 1919; Graphical and Mechanical Computation, by Joseph Lipka, 1918; 
Introduction to Economic Statistics, by G. R. Davies, 1922; or other standard texts dealing with the method 
of least squares. 
3 Average. 
