Questions about web surveys

Internet Matthias Kappeler, Head of the
opinion research institute Isopublic, does not trust online surveys.
He pointed out several weaknesses of this type of survey to the SDA.
The main problem is that not everyone has access to the Internet,
why such surveys are not representative of the population as a whole.
could be. However, Kappeler also has doubts if only
Internet users should be surveyed. Younger people are more likely to have access
to the Internet. It is also known that progressive thinkers use the Internet
were more likely to use them. Another problem is the choice of
website. For example, sbb.ch is hardly ever visited by people who
are always traveling by car. According to Kappeler, the
multiple participations the results.
Kappeler conceded that some errors with corresponding weighting
can be corrected. However, this would make the results less
informative value because the groups are getting smaller, he said. (mk)