Table 13 SURE estimates of the effects of seasonality, grain market liberalization, rainfall and food aid on white wheat
price spreads based on the assumption of weak market integration (1984:10 to 1993:12)
Independent |
Market | ||||
Addis1 Hosaenna2 |
Dire Dawa1 |
Mekele1 Addis2 |
Dire Dawa1 Hosaenna2 |
Mekele1 Hosaenna2 | |
Constant |
19.68a |
85.75a |
64.75a |
105.43a |
84.43a |
Dec |
0.40 |
2.55 |
10.38 |
2.95 |
10.78 |
Jan |
-3.50 |
15.70 |
-23.41 |
12.20 |
-26.91c |
Feb |
-7.39 |
-0.92 |
-2.07 |
-8.31 |
-9.46 |
Mar |
-17.11 |
8.82 |
12.52 |
-8.29 |
-4.59 |
Apr |
-20.64 |
13.10 |
4.70 |
-7.54 |
-15.94 |
May |
-15.17 |
6.54 |
11.83 |
-8.63 |
-3.34 |
Jun |
-18.06c |
-8.72 |
22.49 |
-26.78b |
4.43 |
Jul |
1.68 |
-17.23 |
12.41 |
-15.55 |
14.09 |
Aug |
3.89 |
-11.89 |
1.61 |
-8.00 |
5.50 |
Sep |
3.93 |
-11.13 |
16.59 |
-7.20 |
20.52c |
Oct |
-2.52 |
-10.57 |
-3.80 |
-13.09 |
-6.32 |
Dlib12 |
-9.52 |
-11.40 |
-44.15a |
-20.92b |
-53.67a |
RF1 |
-0.05 |
-0.00259 |
-0.19a |
-0.00259 |
-0.19a |
RF2 |
0.04 |
0.05 |
0.05 |
0.04 |
0.04 |
FAID1 |
0.000258 |
0.000431c |
-0.000274a |
0.000431c |
-0.000274a |
FAID2 |
0.000817 |
-0.000258 |
-0.000258 |
0.000817 |
0.000817 |
P1 p t-1 |
0.70a |
0.28a |
0.67a |
0.28a |
0.67a |
P2 p t-1_____________________ |
-0.67a |
-0.70a |
-0.70a |
-0.67a |
-0.67a |
Note: a, b, and c indicate statistical significance at a probability of less than 1%, 5% and 10% respectively.
-36-
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