I am using the Survey Procs. I end up with an estimated population size that is double the US population.
I am not sure what you mean by this “(the folks in the second year were selected due to something from the previous year)”. I assume they used the same sampling plan both years. I am guessing the samples were independent in that they probably did not end up with the same respondents for both years, but the populations they represent are not independent in that most of the same people who are living in the US in one year are still living there in the next year (minus births, deaths, migration, etc.). Is it only the independence of the samples that’s important? Or should the populations also be independent? Thank you.
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