From unplanned settlement to new housing development in Kigali city: the case study of Amahoro cell, Muhima sector
par John MUGISHA
National University of Rwanda - Bachelor's degree 2011
Simple random sampling was employed in order to secure necessary data from the study area, which gave a chance to every individual household in the study area. To determine the sample size, the following formula was used (Javeau, 1985):
Where n is the sample size,
N is the population size within the study area.
no is the constant
N: B In the study area, the target population was represented by households and the total number of households in Amahoro cell was 1576, no (the constant) is calculated from two complementary events p and q. where p=q=0.5 p+q=1
In his theory, Cochran (1963:75) developed the equation which gives the value of no as follows:
Where z is the threshold of confidence which is estimated to be equal to 2 and e is the stroke of errors that is estimated to 10% or 0.10.
Therefore, n=Nxno n= 1576x100
However, the sample size that was surveyed in the study area was 100 households.
The respondents were selected (at random) in equal proportions in the whole villages comprising Amahoro cell (table 2). To get the sample size for Umudugudu, we took the total number of the households in the cell and divided it by the number of the households in the Umudugudu, multiplied by 100.
i.e. Sample size in Umudugudu= Households in Umudugudu x100
Households in a cell
Also leaders and decision makers at different levels in Kigali city were interviewed. The following table shows the categories of interviewed leaders: