Use PUMS data for PUMAS belonging only in one county

Galateia over 9 years ago

Hello! I try to use PUMS 5yr 2008-2012 data and I face a strange fact that when I sum the weights (variable PWGTP in the dataset) for the PUMAS that belong to a specific County, I do not take as a result the known total population in this county (compared to the population from ACS 2008-2012 estimates)...
Could anyone advise me if I use the given weights properly? The PUMS data are for PUMAS in one whole state and I try to extract only the PUMAS in the county that I need. Is it possible or there is problem because the PUMS data are defined at a state level?

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Beth Jarosz over 9 years ago

Doug is absolutely right.
I skipped past that issue because Cliff mentioned it briefly, above, and Galatia noted that her estimates were FAR off the mark. It didn't seem like a matter of rounding/weighting error in this case.

But the point is a good reminder for all. PUMS data will not exactly match published ACS.
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Beth Jarosz over 9 years ago

Doug is absolutely right.
I skipped past that issue because Cliff mentioned it briefly, above, and Galatia noted that her estimates were FAR off the mark. It didn't seem like a matter of rounding/weighting error in this case.

But the point is a good reminder for all. PUMS data will not exactly match published ACS.
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