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J.G. Bethlehem Reducing the bias of web survey based estimates
At first sight, web surveys seem to be an interesting and attractive means of data collection. They provide simple, cheap and fast access to a large group of people, and they offer all kinds of new possibilities such as use of sound, video and animation. However, there is another side to this coin. Due to methodological problems, outcomes of web surveys may be severally biased. Specific groups in the populations are under-represented among Internet users. Moreover, many web surveys apply self-selection...
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Engels | 32 pagina's | CBS, Statistics Netherlands, Voorburg [etc.] | 2007
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