poniedziałek, 27 stycznia 2014

How the AP-GfK poll was conducted

The Associated Press-GfK poll on the health care overhaul was conducted by GfK Public Affairs and Corporate Communications Jan. 17-21. It is based on online interviews of 1,060 adults who are members of GfK's nationally representative KnowledgePanel.



via Tech News Headlines - Yahoo News http://ift.tt/Uz3yGq

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