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استراتژی نمونهگیری فضایی
These variables could be (i) the number of clusters, (ii) the number of households within a cluster, (iii) the spatial location of the starting point of the survey, and (iv) the 'survey pathway' or the spatial sampling strategy.
is a function of the sample size (the number of clusters n and the number of households within a cluster m) and the spatial sampling strategy
Figure 1 shows schematically the spatial sampling strategy.
Schematic diagram of the spatial sampling strategy
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