The target group of an advertising impact test is usually based on the target group of the product. The target group can be defined according to various socio-demographic as well as other criteria. In order to deal with this complex planning, we will [...]

The optimal sample size is important for the evidence of a study. However, a large sample size is not synonymous with more meaningful results. The representativeness in the population, the methodological framework conditions and the selection procedu [...]