2.2 Population and Sample
The study examined households in Sokoto as the study population. Due to the complex nature of the population, the study draws a sample of twelve (12) LGAs systematically using the expression N/n where N is the population and n is the sample size. The sample size (n) is determined using Yamane’s (1998) formula for sample size determination presented in equation (2.1) with e =0.05 as the margin error.
(2.1)
The 12 LGAs sampled were drawn at the interval for reliability and consistency. Households were further sampled though without the sampling frame using the following expression as formulated by Cochran (1963:75) which yield a representative sample for a large population;
(2.2)
Where n is the sample size and Z is the abscissa of the normal curve, e is the desired level of precision or margin error (e = 0.05) and p is the estimated proportion of an attribute that is present in the population and q is equal top-1. In all, the study surveyed 400 households across the 12 LGAs in the state.