How the AP-GfK poll was conducted (AP)
The Associated Press-GfK Poll on taxes was conducted by GfK Roper Public Affairs & Corporate Communications from Mar. 24-28. It is supported on line and cancellated ring interviews with a nationwide allegoric haphazard sample of 1,001 adults. Interviews were conducted with 701 respondents on line telephones and 300 on cancellated phones.
Digits in the sound drawing dialed were generated arbitrarily to accomplish households with unlisted and traded line and radiotelephone 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 cosmetics by factors such as age, sex, activity and race. In addition, the coefficient took into account patterns of sound use — line only, radiophone exclusive and both types — by region.
No more than digit instance in 20 should quantity variations in the sample drive the results to depart by more than nonnegative or harmful 4.2 percentage points from the answers that would be obtained if every adults in the U.S. were polled.
There are another sources of potential nonachievement in polls, including the wording and visit of questions.
The questions and results are available at http://www.ap-gfkpoll.com.
Source
0 comments:
Post a Comment