The AAPOR statement on “Understanding a credibility interval” is fair, balanced, and agile in showing the complexity of the issues: in particular, that our changing survey research world demands new approaches and ways of thinking, especially with respect to nonprobability designs.
Ipsos, as one of the firms which conducts online polling and employs credibility intervals, believes that a Bayesian approach is one possible way to address the “nonprobability inference conundrum” (Roshwalb et al).
To further the discussion, we have several additional comments: [cont.]
Julia Clark & Clifford Young, Ipsos Public Affairs