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Table 1 Maximum likelihood estimate for Cobb–Douglas production function

From: Analysis of technical efficiency of small holder wheat-growing farmers of Jamma district, Ethiopia

Variable Maximum likelihood estimate  
Coefficient SE Z-value
Intercept 1.063*** 0.353 3.01
lnOxen 0.002** 0.001 2.01
lnLabor 0.030*** 0.018 2.78
lnSeed 0.014 0.009 1.56
lnFertilizer 0.057* 0.031 1.84
lnArea 0.365*** 0.099 3.69
Sigma-squared 0.127*** 0.043 2.95
Log likelihood − 47.31   
Return to scale 1.43   
Mean technical efficiency 0.88   
Total sample size 149   
  1. ***; *Represents significance at 1% and 10% probability levels, respectively