The data in this Pew Research Center report is drawn from a national cross-sectional survey conducted by Westat. The sampling design of the survey was an address-based sampling (ABS) approach, ...
Pew Research Center designed this study to assess the current state of online survey sampling methods – both probability-based and opt-in – and determine their accuracy on general population estimates ...
In a paper initially prepared for the planning meeting for this review, Peytchev (2013) observes that drawing “unbiased inference from probability-based surveys relies on the collection of data from ...
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