1. Contemplate the methodology statement in Appendix A of this exercise. What so
ID: 3357075 • Letter: 1
Question
1. Contemplate the methodology statement in Appendix A of this exercise. What sort of sampling procedure was employed and why do you think the author chose this approach? 2. 3. Appendix A The interviewees comprise a representative sample of the adult population of the continental United States. Institutionalized populations are excluded (e.g., those in prisons, military bases, and nursing homes). At the first stage in sample development, 100 counties are selected. Probabilities of selection are proportionate to population. All US counties and the District of Columbia are first classified by region (the 9 Census Geographic Divisions) and then as metropolitan or non-metropolitan, to yield 18 strata. Then, all counties within the 18 strata are ranked by population size. The counties used as primary sampling units are chosen such that all 9 Census Geographic Divisions have both metropolitan and non-metropolitan representatives. In the second stage, two Census block groups or equivalent units are selected, again with probabilities of selection proportionate to population. At the third stage, two sample locations (Census blocks or rural equivalents) are chosen. Again, the likelihood of a given block being chosen is proportional to its population. At the block level, interviewers are deployed to conduct visits at all residences in the block. Half the blocks are first visited after 5 p.m. on weekdays or on the weekends; half are first visited before 5 p.m. on weekdays.
Explanation / Answer
A multistage cluster sampling methodology was used. Multistage sampling defines in which sampling is carried out in stages using samller and samller sampling units.
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