Invitation Method |
Sample Source |
Record-Selection Method |
Number of Invitations Sent |
Response Rate |
Email |
Email addresses obtained via lists from the Library and Water Departments |
Randomly selected emails proportionate to Arlington ’ s zip code distribution |
60,000 4.4 % |
Mailed postcard |
Randomly selected residential addresses proportionate to Arlington ’ s zip code distribution |
7,000 3.2 % |
A list of all occupied residences in Arlington |
Augment : Randomly selected residential addresses within zip codes containing higher proportions of non-white residents |
5,000 1.5 % |