One possible explanation for the variability in estimates across the different nonprobability samples is the range of methods that online sample vendors employ. They differ on recruitment, weighting ...

This paper develops a design-based inference mode for the analysis of randomized experiments embedded in probability samples . To generalize results obtained with field experiments to large ...

The Public Opinion Quarterly, Vol. 82, No. 4 (Winter 2018), pp. 707-744 (38 pages) Many studies in various countries have found that telephone and internet surveys of probability samples yielded data ...

Statistics are often estimated from a sample rather than from the entire population. If the inclusion probability of the sample is unknown to the researcher, that is, a nonprobability sample, naively ...

The following PROC SURVEYSELECT statements select a probability sample of customers from the Customers data set according to the stratified sample design. title1 'Customer Satisfaction Survey'; title2 ...