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Mapping 5 Year Data
Derek L Thomas
over 8 years ago
I’m wondering if there’s a best practice for reporting on/mapping the 5 year data with such wide margins of error, such as a 24.7% poverty rate w/ an MOE of +/-36.2, or even 0% poverty rate w/ an MOE of +/-28. For example, is there an MOE threshold that we could establish as too high to report on (leaving many counties in our map without data). This seems especially tricky when looking at differences between groups – such as difference between white and black poverty rates - when one race/ethnicity has a higher MOE than the other
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Patrick Burns
over 8 years ago
Not sure if you're using ESRI products for mapping, but maybe their article on Margin of Error can help:
www.esri.com/.../understanding-margin-error
Also, I attended an Association of American Geographers annual conference several years back where David Wong of George Mason University presented a ArcGIS extension he created that overlays a cross-hatching pattern on top of your data values, based upon the margin of error:
http://gesg.gmu.edu/census/
The "documentation" PDF on their download page is worth reading.
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Patrick Burns
over 8 years ago
Not sure if you're using ESRI products for mapping, but maybe their article on Margin of Error can help:
www.esri.com/.../understanding-margin-error
Also, I attended an Association of American Geographers annual conference several years back where David Wong of George Mason University presented a ArcGIS extension he created that overlays a cross-hatching pattern on top of your data values, based upon the margin of error:
http://gesg.gmu.edu/census/
The "documentation" PDF on their download page is worth reading.
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