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probability sample, or it may be caused by self-selection in an internet survey. A contraction theorem from mathematical …
Persistent link: https://www.econbiz.de/10012821615
not use the internet. We run a large-scale opinion survey with (1) onliners in web mode, (2) offliners in face …
Persistent link: https://www.econbiz.de/10011905518
This paper investigates if significant differences exist between online and paper & pencil participants in a quarterly business survey in the German business-related services sector when respondents may freely choose to respond either online or by more conventional methods. It also analyzes the...
Persistent link: https://www.econbiz.de/10013428432