Effects of Income and Price on Household’s Charcoal Consumption in Three Cities of Tanzania

Table 2

Regression results of full sample and three income level samples.

	Total sample (n = 333)		Low income (n = 120)		Middle income (n = 142)		High income (n = 71)
	Coefficients	SE	Coefficients	SE	Coefficients	SE	Coefficients	SE
Intercept	6.138	0.472	7.689	1.075	8.490	1.891	2.628	1.583
Per capita income	0.034	0.020	0.061	0.066	−0.159	0.108	0.167	0.094
Price of charcoal	−0.130	0.063	−0.442	0.102	−0.024	0.108	0.057	0.135
Household size	−0.621	0.055	−0.590	0.082	−0.814	0.081	−0.440	0.160
Adjusted R^2	0.3162		0.414		0.3279		0.2195
F-value	52.17		29.12		23.92		7.564

Significant at level α = 0.01; significant at level α = at 0.05; significant at level α = 0.10.