This is a preview. Log in through your library . Abstract Despite the importance of understanding error associated with sampling, there has been a paucity of ...

This is a preview. Log in through your library . Abstract A comprehensive treatment of the theory of non-sampling errors is given in this paper by bringing together the work of a number of authors on ...

A behind-the-scenes blog about research methods at Pew Research Center. For our latest findings, visit pewresearch.org. Academic survey researchers tend to differ ...