How the poll on immigration was conducted
By APThursday, May 13, 2010
How the poll on immigration was conducted
The Associated Press-Univision Poll on immigration was conducted by GfK Roper Public Affairs & Media from May 7-12. It is based on landline and cell phone telephone interviews with a nationally representative random sample of 901 Hispanic adults.
It was conducted as a supplement to this month’s AP-GfK Poll, which was conducted May 7-11 and was based on a nationally representative sample of 1,002 adults.
Digits in the phone numbers dialed were generated randomly to reach households with unlisted and listed landline and cell phone numbers.
Interviews were conducted in both English and Spanish.
As is done routinely in surveys, results were weighted, or adjusted, to ensure that responses accurately reflect the population’s makeup by factors such as age, sex, education, and race. In addition, the weighting took into account patterns of phone use — landline only, cell only and both types — by region.
No more than one time in 20 should chance variations in the sample cause the results to vary by more than plus or minus 5.3 percentage points from the answers that would be obtained if all Hispanics in the U.S. were polled. For the AP-GfK poll, the margin of sampling error was plus or minus 4.3 percentage points.
There are other sources of potential error in polls, including the wording and order of questions.
The questions and results for this poll will be available www.ap-gfkpoll.com.
