I would like to know about the econometric problems that arise when ascribing or attributing observations at one level of aggregation (say a geographic level) to another. For example, I may have some individual-level observations (observations about people) and observations about their neighborhoods – for example, census tracts. Some geographic information systems (GIS) programs have a subroutine that automatically creates an “attribution” based on a weighting scheme. I would appreciate references to literature or advice on how to handle such issues, especially if several levels of attribution are involved – for example: individual observations nested within census tracts nested within counties.
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