Szolnoki, Gergely; Hoffmann, Dieter - In: Wine Economics and Policy 2 (2013) 2, pp. 57-66
respondents were compared with two online surveys, one based on quota sampling (2000) and the other on snowball sampling (3000 …-demographic structure of the German population in terms of six demographic variables that were selected for the quota sampling. The online … online quota survey. Face-to-face surveys still deliver the most representative results. Telephone surveys may provide a good …