The 2025 ACS Data Users Conference will be held on May 29, 2025 (virtual day) and June 3, 2025 (in-person in DC)
Details
  • Views 4352 views
  • Replies 5 replies
  • Subscribers 542 subscribers
  • Users 0 members are here
Labels
Related Census Bureau Resources
Related Forum Threads

Best approach for minimizing error for a given year when using overlapping 5-year data?

ericlaufer
over 5 years ago

Hi Folks,

This is my first post and day on this forum.  I couldn't find the answer to this question, but if there is a good thread which exists already, please point me in that direction.

I am conducting an analysis where my geographic region is at the county level.  As such, I would like to use the 5-year data.

However, I need to run a calculation for a single year.  For example,  I need to run a calculation in Suffolks County, NY for 2010.  There are several 5 year samples (2006-2010,2007-2011...2010-2014) which overlap and include 2010.

What is the optimal approach, in terms of minimizing error, of dealing with this?  How do I combine, if at all, the different multi-year datasets to find the best figure to use.

thanks,
Eric

Parents
  • over 5 years ago
    The short answer is, you can't. The ACS sample just doesn't have enough cases to provide single year data for small areas, which the Census Bureau has defined as those under 65,000 population.

    I would use 2008-12 and label the data presentation as such.
  • over 5 years ago in reply to Patty Becker
    Hi Patty,

    Thank you for your response. I'm looking at all counties across the country, I just pulled Suffolk randomly.

    So your recommended approach to use the 5-year data where the year of interest is the midpoint?

    Why is this a better approach (statistically), than averaging the 2006-2010 set and the 2010 to 2014 set?

    thanks,
    Eric
  • over 5 years ago in reply to ericlaufer
    If you average the two five-year data sets, you're looking at 10 years of data, instead of 5. A 10 year spread really isn't very useful. No one loves the 5 year spread, either, but it's the best we've got for areas of under 65K population.
Reply Children
No Data
For more information about the American Community Survey Census Bureau Website