Analysis of Economic Efficiency and Farm Size: A Case Study of Wheat Farmers in Nakuru District, Kenya

Table 1

Ordinary least squares (OLS) estimates of the average production function and ML estimates of the stochastic production frontier for the sampled wheat producers.

Variable	OLS estimates		-ratio	ML estimates		-ratio
	Coefficient	Standard error		Coefficient	Standard error
Intercept	4.59	1.003	4.57	4.46	0.882	5.06
lnseed	0.28	0.228	1.24	0.48	0.205
lnfertilizer	0.08	0.054	1.49	0.11	0.043
lnfoliar	0.1	0.114	0.89	0.09	0.083	1.13
lnchemical	0.19	0.066		0.11	0.042
lnhiredlabor	0.04	0.029	1.52	0.04	0.025	1.76
lnfamilylabor
sigma squared	0.54			1.26	0.216	5.82
gamma ()	—			0.93	0.036
Log likelihood	−140.54			−131.2

Significant at the 5% level.