Table 10 SURE estimates of the effects of seasonality, grain market liberalization, rainfall and food aid on white
wheat price levels based on the assumption of weak market integration (1984:10 to 1993:12)
|
Independent |
Market | |||
|
Addis Ababa |
Hosaenna |
Dire Dawa |
Mekele | |
|
Constant |
54.52a |
34.84c |
140.27a |
119.27a |
|
Dec |
-9.95 |
-10.35 |
-7.40 |
0.43 |
|
Jan |
-6.15 |
-2.65 |
9.35 |
-29.56a |
|
Feb |
-7.64 |
-0.25 |
-8.56 |
-9.71 |
|
Mar |
-15.49 |
1.62 |
-6.67 |
-2.97 |
|
Apr |
-11.25 |
9.39 |
1.85 |
-6.55 |
|
May |
-3.20 |
11.97 |
3.34 |
8.63 |
|
Jun |
-2.26 |
15.8b |
-10.98 |
20.23c |
|
Jul |
8.53 |
6.85 |
-8.70 |
20.94c |
|
Aug |
8.68 |
4.80 |
-3.20 |
10.30 |
|
Sep |
12.78 |
8.85 |
1.63 |
29.37a |
|
Oct |
8.86 |
11.38c |
-1.71 |
5.06 |
|
Dlib 12 |
2.16 |
11.68b |
-9.24 |
-41.99a |
|
RF |
-0.05 |
-0.04 |
-0.00259 |
-0.19a |
|
FAID |
0.000258 |
-0.000817 |
0.000431c |
-0.000274a |
|
Pt-1 |
0.70a |
0.67a |
0.28a |
0.67a |
|
Diagnostics | ||||
|
R2 |
0.69 |
0.68 |
0.07 |
0.92 |
|
JB |
58.57a |
4.09 |
2.76 |
0.55 |
|
Q-S_________ |
12.03 |
10.41 |
97.91a |
5.26 |
Note: a, b, and c indicate statistical significance at a probability of less than 1%, 5% and 10% respectively.
-33-
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