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Table 4 Variance parameters for the production function.

From: Achieving sustainable development goals on no poverty and zero hunger: Does technical efficiency of Ghana’s maize farmers matter?

Variable

Parameter

SE

Sigma squared σ2 = σ 2 u  + σ 2 v

0.722*

0.006

Gamma γ = σ 2 u /σ2

0.999***

0.046

Lambda λ = σu/σv

3,764,018***

0.009

Log-likelihood

− 246.316

 

Mean technical efficiency

58.1

 

Sample size

576

 

Wald statistic

3.1 × 1010***

 

Mean variance inflation factor (VIF)

1.252

 

Breusch Pagan statistic

0.566

 
  1. The asterisks indicate levels of significance. *** is significant at 1%, ** is significant at 5%, and * is significant at 10%