How to Succeed with Biased Samples

How to Succeed with Biased Samples

Leading practitioners of survey research now agree that online polling and other forms of non-probability sampling can work.  The key is to give careful attention to the survey protocols, data collection, cleaning, and back-end weighting so that ultimately the sample being analyzed matches the population you want to know about in as many relevant ways…

Versta Research Post

Polling Group Gives Nod to Online Surveys

The purists in the polling industry who have always insisted that only probability sampling is valid may finally be accepting that their methods are dead. This is one happy conclusion I draw from the debate over AAPOR’s recent task force report on non-probability sampling, which is nicely summarized (and debated) as the lead article of…

Versta Research Post

28 Questions to Ask before Buying Online Sample

With all our excitement over the last few months about the accuracy of online polling during the election season—substantially outperforming “gold standard” telephone research—there was not time to share ESOMAR’s September 2012 updated guide to purchasing online sample.  The guide consists of 28 questions all purveyors of online sample should answer, publish, and make available…