Hospital Referral Region study -- trouble with colors

Discussion created by lwang09 on Sep 6, 2013
Hello all, I'm trying to create a chloropleth map of median costs by Hospital Referral Regions (HRR) for certain medical procedures as reported by CMS. However, the colors keep changing when I pan the map, change to Layout view, and even when I export the map. Does anyone have any ideas?

The HRR shapefile I downloaded has an undefined coordinate system, so I don't know if that is causing it. When I define the coordinate system, ArcGIS crashes when I try to add the graduated colors so I'm at a loss. THank you in advance