How the AP-GfK poll was conducted

The Associated Press-GfK poll on the assassination of John F. Kennedy was conducted by GfK Roper Public Affairs & Corporate Communications on April 11-15. It is based on landline telephone and cellphone interviews with a nationally representative random sample of 1,004 adults. Interviews were conducted with 601 respondents on landline telephones and 403 on cellphones.



via Tech News Headlines - Yahoo! News http://news.yahoo.com/ap-gfk-poll-conducted-065419637--finance.html