Data Driven Identification of Sources of Errors for Improving Survey Quality

Actions that ensure the quality of a survey are taken prior and posterior the conduction of the survey. Prior decisions have to be made e.g. about the most appropriate frame, the interview mode, the design of the questionnaire, furthermore interviewer have to be trained, software and hardware must be prepared and so on. After the survey the data are validated with respect to a predefined set of rules. For inquiry and verification of given or missed answers interviewees are contacted.