28 BULLETIN 1351, U. S. DEPARTMENT OF AGRICULTURE 
Table II. — Correlation of Chicago price and United States production of oats 
United States produc- 
tion 
Chicago price per 
bushel 
Variation from 
mean 
X* 
yi 
Year 
Total 
Straight 
line 
trend 
Ratio 
to 
trend 
Actu- 
al 
Straight 
line 
trend 
Ratio 
to 
trend 
Produc- 
tion 
ratios 
X 
Price 
ratios 
y 
xy 
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 
Million 
bushels 
496 
516 
536 
556 
576 
596 
616 
636 
656 
676 
696 
716 
736 
756 
776 
796 
816 
836 
856 
876 
896 
916 
936 
956 
976 
996 
1,016 
1,036 
1,056 
1,076 
1,096 
1,116 
1,136 
0.84 
.95 
1.07 
1.05 
1.09 
1.05 
1.07 
1.10 
1.14 
.77 
1.06 
.92 
.87 
.88 
1.06 
.98 
.97 
1.01 
1.08 
1.04 
.87 
1.15 
.93 
1.06 
1.12 
1.04 
.79 
.82 
1.01 
1.10 
.84 
1.27 
.99 
Cents 
47 
37 
31 
29 
28 
25 
30 
24 
24 
43 
31 
30 
31 
28 
19 
18 
24 
25 
23 
25 
42 
33 
38 
30 
31 
39 
51 
52 
43 
35 
51 
37 
41 
Cents 
36.0 
35.3 
34.6 
34.0 
33.2 
32.5 
31.2 
30.5 
29.8 
29.0 
28.3 
27.5 
26.8 
26.1 
25.3 
23.6 
25.0 
26.4 
27.8 
29.2 
30.6 
32.0 
33.4 
34.8 
36.2 
37.6 
39.0 
40.4 
41.8 
43.2 
44.6 
46.0 
47.4 
1.30 
1.05 
.90 
.85 
.84 
.77 
.96 
.79 
.81 
1.48 
1.10 
1.09 
1.16 
1.07 
.75 
.76 
.96 
.95 
.83 
.86 
1.37 
1.03 
1.14 
.86 
.86 
1.04 
1.31 
1.29 
1.03 
.81 
1.14 
.80 
.87 
-0.16 
-.05 
+.07 
+.05 
+.09 
+.05 
+.07 
+.10 
+.14 
-.23 
+.06 
-.08 
-.13 
-.12 
+.06 
-.02 
-.03 
+.01 
+.08 
+.04 
-.13 
+.15 
-.07 
+.06 
+.12 
+.04 
-.21 
-.18 
+ 01 
+.10 
-.16 
+.27 
-.01 
+0.30 
+.05 
-.10 
-.15 
-.16 
-.23 
-.04 
-.21 
-.19 
+.48 
+.10 
+.09 
+.16 
+.07 
-.25 
-.24 
-.04 
-.05 
-.17 
-.14 
+.37 
+.03 
+.14 
-.14 
-.14 
+.04 
+.31 
+.29 
+.03 
-.19 
+.14 
-.20 
-.13 
0. 0256 
.0025 
.0049 
. 0025 
.0081 
.0025 
.0049 
.0100 
. 0196 
. 0529 
.0036 
.0064 
.0169 
.0144 
.0036 
.0004 
.0009 
.0001 
. 0064 
.0016 
. 0109 
.0225 
.0049 
.0036 
.0144 
.0016 
.0441 
. 0324 
.0001 
.0100 
.0256 
.0729 
.0001 
0.0900 
.0025 
.0100 
.0225 
. 0256 
. 0529 
.001(1 
.0441 
.0361 
.2304 
.0100 
.0081 
.0256 
.0049 
.0625 
.0576 
.0016 
. 0025 
.0289 
.0196 
.1369 
.0009 
.0196 
.0196 
.0196 
.0016 
.0961 
. 0841 
.0009 
. 0361 
. 0196 
.0400 
.0169 
-0. 0480 
1882 
-.0025 
1883. 
— . 0070 
1884 
-.0075 
1885 
-.0144 
1886 
-.0115 
1SK7 
-.0028 
1888 
-.0210 
1889 . 
-. 0206 
ls9i) 
-. 1104 
1891 
+.0060 
1892 
-.0072 
1893 
-.0208 
1894 
-.0084 
1895 
— 0150 
1896 
+.0048 
1897 
+. 0012 
-.0005 
1898 
1899 
— . 0136 
1900 
— . 0056 
1901 
— 0481 
1902 
+.0045 
— 0098 
1903 
1904 . 
— . 0084 
1905 
— 0'68 
1906 . 
+.0016 
— 0651 
L907 
1908 
— 0522 
j909... 
+. 0003 
1910 
— 0190 
1911.. 
-. 0224 
1912 . 
— 0540 
1913... 
+. 0013 
Total 
32.99 
1.00 
32.83 
.994 
. 4369 
L2289 
— 5989 
Mean. . 
: _^fLo.n5. ,J™. 
=0.193. 
-0.5989 
33X0.115X0.193 0.7324 
=-o.: 
