|
Table 2. Estimated Coefficients for the Four Different Models (Continued)._________________ | ||||||
|
Variable |
Units |
Model 1 |
Model 2 |
Model 3 |
Model 4 |
KASb |
|
lsb |
$/bale |
12.07 |
12.07 |
12.08 |
12.08 |
11.70 |
|
ssb |
$/bale |
0.532 |
0.533 |
0.533 |
0.533 |
0.535 |
|
cs |
$/ton |
3.07 |
3.07 |
3.07 |
3.07 |
3.09 |
|
rm |
$/acre |
7.83 |
7.84 |
7.83 |
7.84 |
7.90 |
|
fpm |
$/mile |
0.336 |
0.341 |
0.336 |
0.341 |
0.345 |
|
gsm |
$/mile |
1.79 |
1.84 |
1.80 |
1.84 |
2.07 |
|
fertilizer |
percent |
112.5 |
112.6 |
112.4 |
112.6 |
113.4 |
|
fcwf |
$/acre |
6.30 |
6.37 |
6.24 |
6.41 |
6.72 |
|
swf |
$/acre |
6.09 |
6.11 |
6.06 |
6.12 |
6.10 |
|
dntwf |
$/acre |
11.35 |
11.34 |
11.28 |
11.39 |
11.22 |
|
drtwf |
$/acre |
6.67 |
6.75 |
6.61 |
6.75 |
7.36 |
|
pntwf |
$/acre |
11.14 |
11.40 |
11.00 |
11.20 |
11.37 |
|
prtwf |
$/acre |
9.17 |
9.25 |
9.11 |
9.25 |
9.11 |
|
Scale Factors | ||||||
|
constant |
-- |
1.364 |
1.452 |
1.241 |
1.792 |
-- |
|
ha |
-- |
-6.2×10-5 |
-2.1×10-4 |
-- |
-- |
-- |
|
ha2 |
-- |
-- |
4.3×10-8 |
-- |
-- |
-- |
|
1/ha |
-- |
-- |
-- |
33.027 |
-- |
-- |
|
ln(ha) |
-- |
-- |
-- |
-- |
-0.076 |
-- |
|
In-sample Statistics | ||||||
|
CCc |
-- |
0.871 |
0.871 |
0.874 |
0.872 |
-- |
|
RMSEd |
-- |
27,648 |
27,688 |
27,598 |
27,607 |
-- |
a Functional form of the scale factor adjustment
b Average custom rate reported by Kansas Agricultural Statistics
c Correlation coefficient
d Root mean square error
Table 3. Out of Sample Model Statistics for the Four Different Models
|
Model 1 _______(Linear/ |
Model 2 |
Model 3 |
Model 4 | |
|
CCc |
0.864 |
0.858 |
0.869 |
0.865 |
|
RMSEd_____ |
________28,368 |
29,021 |
28,205 |
28,353 |
Functional form of the scale factor adjustment
Correlation coefficient
d Root mean square error
19