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 ...

The analysis in this report is based on an online probability survey conducted September 12-18, 2014 among a sample of 1,066 adult internet users, 18 years of age or older. The survey was conducted by ...

Statistical estimation in survey sampling encompasses a range of methods designed to infer population parameters from observed data in a manner that is both unbiased and efficient. Traditional ...

Probability surveys have been a cornerstone of federal statistics since the 1940s. Back then, almost any kind of data collection was expensive, and probability survey samples provided a way to produce ...

Random probability based surveys provide a strong theoretical foundation and underpin the basis of much of market research, but the industry has been experiencing a steady decline in response rates ...

UK – At a lecture hosted by the International Journal of Market Research (IJMR), researchers from Kantar, NatCen and Ipsos Mori discussed the future of random probability sampling. Random probability ...