Originally Posted by
racedo
I keep saying on Which ? surveys that there is zero proof required that a participant has actually used a facility.
BBC and Media give it great credence as if it was a mega survey yet down play that less that 0.25% of Which? members have actually taken part adn there is zero verification of usage of anything. It is False and Misleading advertising.
Which send their surveys to a sample of their members. I think they select from members who are regular flyers. Whether that sample is large enough, ask a statistician. I think it unlikely that the responders include the sort of trolls that infest TripAdvisor and the like. It's quite expensive to join.