My 8 Takeaways from the ACS Data Users Conference

As a Census data nerd, I’ve been geeking out with the rest of my tribe during each American Community Survey (ACS) Data Users Conference. Each one has been a fun and interesting experience, with insider experiences about the challenges and opportunities in using Census data. I use this inside information for the benefit of my clients, who often want to use Census data to make better policy and operational decisions.

This year was no different. Here are some brief reflections on the things I’ve learned at this year’s conference.

  • The data generated by the Bureau of the Census is important. In addition to all the ways non-government users work with ACS data, the ACS has more than 300 known federal government uses and supports many basic decisions made by elected officials and civil servants. In my experience, many cities and other local municipalities are interested in using the data Census provides, relying on it to provide insight beyond what their own internal data is able to provide. For them, Census provides the “denominator” over which their “numerator” of administrative records can be divided. I’ve seen this in my work where Census data provides an understanding of the “unknowns” better than any other data source available.

  • The Census cares about engaging stakeholders. 4 years ago, Census created the position of Respondent Advocate to create greater awareness within the Bureau for the interests and concerns of respondents. We were told this wasn’t just coming from Congress, but from within the Bureau as well. I can’t imagine ignoring the concerns of respondents is great for response rates.

  • The Census is trying to be responsive. In addition to engaging stakeholders, The Census is also testing various behavioral insight techniques to better engage respondents with language that is clearer and “softer” in it’s asking for compliance. They’re also looking to develop better ways of disseminating the data, moving away from text-based summary files and towards a data portal with the ultimate goal (through their data dissemination road map) of giving users a single search bar to find the data they’re interested in.

  • The Bureau of the Census is ultimately a customer-driven organization. The various statistical products they provide each have their own sponsor, with Congress being the sponsor for the Decennial Census and the ACS. While this customer-driven process means that the surveys are responsive to the needs of the data consumers within government, it also means that differing interests among customers leads to differences in the products, impacting (negatively usually) how well they can be used together. Additionally, if the customer isn’t interested in something, it’s not going to be measured.

  • Margins of error in the Census need to be respected. Margins of error come from the fact the ACS is a sampling of the population and are plotted at the 90% confidence interval. For particularly small geographies (like tracts or block groups), the margins can be greater than the estimates. Failing to keep these in mind can lead to decisions that aren’t supported in the data. Like most data users that aren’t rigorously trained in statistics, I struggle with how best to use them, which is why it was great to see work done to build tools for estimating data reliability. Unfortunately, these are built for ESRI and haven’t been ported to QGIS (at least not yet).

And a bonus, the US Patent and Trademark Office building is absolutely gorgeous:

Looking forward to the next conference!

Advertisements

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s