Deriving ACS Estimates without an existing MOE

Diana Benitez over 9 years ago

I'm trying to map the comparison between ACS 2005 - 2009 to ACS 2006 - 2010 using statistical significance with the formula recommended by the Census. This formula requires that I use estimates and margins of error. The ACS 05-09 (Census 2000) and ACS 06-10 (Census 2010) geographies do not match and cannot map. I know that ACS has relationship files that I can use to relate the geographies and estimates. But how do I relate the margins of error?

Thank you.

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Stas Kolenikov over 9 years ago

Diana, a universal convertor of many types of Census and other semi-official geographies is provided by Missouri Census Data Center, mcdc.missouri.edu/.../geocorr12.html.

As far as correlations due to overlapping years go, if I were desperate, I would use a correlation of 0.8 if 4/5 of the years overlap. But generally I would expect the estimates at the low levels like block groups to be extremely sensitive to variance estimation methods, and obviously bluntly adding up the squared margins of error, or even accounting for 0.8 correlation, isn't going to be quite right. Unfortunately, you won't even be able to get consistent PUMAs for the 2009-2013 ACS, as they switched to the new ones right in the middle.
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Stas Kolenikov over 9 years ago

Diana, a universal convertor of many types of Census and other semi-official geographies is provided by Missouri Census Data Center, mcdc.missouri.edu/.../geocorr12.html.

As far as correlations due to overlapping years go, if I were desperate, I would use a correlation of 0.8 if 4/5 of the years overlap. But generally I would expect the estimates at the low levels like block groups to be extremely sensitive to variance estimation methods, and obviously bluntly adding up the squared margins of error, or even accounting for 0.8 correlation, isn't going to be quite right. Unfortunately, you won't even be able to get consistent PUMAs for the 2009-2013 ACS, as they switched to the new ones right in the middle.
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