Comparisons Within the Same Time Period


I have a question related to comparing two estimates from the same period. The comparison involves a large area (a city) and a tract from the city. Given they are not independent samples, how can I can compare the mean of a variable that represents a city to the mean of the same variable of a city's census tract? Please advise. 

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  • the difference of medians. is there a r script to pull variance replicate tables? I need to follow this process for many variables and was wondering if there is a way to automatize this estimation. i see variance replicate tables can not be retrieved using the census api, any suggestions are welcome. thanks