Table 4 Estimation results—multiple linear regression model
Variables | OLS estimation | Robust estimation | ||||
|---|---|---|---|---|---|---|
Coef | t | P >|t| | Coef | t | P >|t| | |
LocEDM | 16.5591*** | 9.25 | 0.000 | 16.5357*** | 9.50 | 0.000 |
LocTM | 16.3714*** | 9.04 | 0.000 | 15.0888*** | 8.56 | 0.000 |
LocBL | 3.6477** | 1.99 | 0.047 | 3.9831** | 2.23 | 0.026 |
LocBI | 5.3799*** | 2.95 | 0.003 | 5.2195*** | 2.95 | 0.003 |
LocRO | − 24.1299*** | − 13.00 | 0.000 | − 25.4542*** | − 14.10 | 0.000 |
LocALG | − 19.5764*** | − 6.94 | 0.000 | − 20.9193*** | − 7.62 | 0.000 |
LocMD | 73.0703*** | 19.37 | 0.000 | 76.7185*** | 20.90 | 0.000 |
LocAZ | − 3.1079 | − 1.18 | 0.238 | − 39.313 | − 1.53 | 0.125 |
Acreage | 0.11955*** | 10.08 | 0.000 | 0.2062*** | 10.93 | 0.000 |
Small | − 0.4116*** | − 13.51 | 0.000 | − 0.4631*** | − 15.26 | 0.000 |
Landownership | 0.0203 | 0.92 | 0.358 | 0.0169 | 0.79 | 0.430 |
Fruit | − 0.2246*** | − 5.88 | 0.000 | − 0.2277*** | − 6.13 | 0.000 |
Olives | 0.2532*** | 8.91 | 0.000 | 0.2902*** | 10.50 | 0.000 |
Vineyard | − 0.2554*** | − 9.16 | 0.000 | − 0.2417*** | − 8.91 | 0.000 |
Cereals | 0.2023*** | 6.20 | 0.000 | 0.1735*** | 5.47 | 0.000 |
Vegetables | − 0.4563*** | − 8.83 | 0.000 | − 0.4912*** | − 9.87 | 0.000 |
lnCattle | 0.6267** | 2.30 | 0.021 | 0.8668*** | 3.27 | 0.001 |
lnSheep | − 1.1426*** | − 3.61 | 0.000 | − 1.1799*** | − 3.83 | 0.000 |
lnGoat | − 0.8749*** | − 3.46 | 0.001 | − 0.5827*** | − 2.37 | 0.000 |
lnYoung | 1.9327*** | 3.67 | 0.000 | 2.0010*** | 3.91 | 0.000 |
Constant | 57.5027*** | 22.83 | 0.000 | 60.4050*** | 24.65 | 0.000 |
|  | F = 151.53; Prob > F = 0.000@R2 = 0.6355; Adjusted R2 = 0.6355; @ | BP/CW χ2 = 2.20;Prob > χ2 = 0.1384 | ||||