Analyses developed with inaccurate data can dramatically affect results. Does data accuracy matter? Indeed it does. For example, under- or overestimated data could mean an inaccurate assessment of an area's growth potential, or the loss of dollars, healthcare, grants, servicesperhaps even life itself.
These maps of the United States by county illustrating the Household Absolute Percent Error were created with the Household variable from each of the five major data vendors. The disparity in accuracy is clearly illustrated for easy comparison. Click on a map to see a larger image.
Household Absolute Percent Error
Vendor 2 (Esri)