This study reports the findings of a comparison between different non-probability sampling methods applied in a WWW-user-survey.

Survey sampling and estimation methods form the cornerstone of modern statistical inference, underpinning research across the social, medical, and natural sciences. At their heart, these methods ...

The other – and arguably the biggest — difference is that the samples for these surveys are selected using so-called non-probability sampling methods. For decades, only probability – or random – ...

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 ...

You can't do this with non-probability sampling methods. 2. Discuss the main types of probability sampling methods and explain their strengths and weaknesses. If you construct your sample by randomly ...