Residence was determined by identifying the best possible address information as provided by the students.  Missing "local addresses" were replaced by "permanent addresses". Expired local addresses were NOT substituted with "permanent addresses," they were seperately recorded as "last known address," in the category "Other."   
Departmental addresses were determined by matching the local or permanent street addresses provided by the students with the actual addresses of buildings on campus. Also includes all students in the Executive MBA program who do not have a valid home mailing address.
*    addresses other than Pennsylvania, New Jersey and Delaware
**  expired addresses
'++ included expired Greek addresses