Telefonumfragen
Telefonumfragen, also known as telephone surveys, are a method of data collection where trained interviewers contact respondents by phone to ask a series of questions. This technique has been a significant tool in market research, public opinion polling, and academic studies for many years.
The process typically involves a structured questionnaire, designed to gather specific information. Interviewers read the questions
Telefonumfragen offer several advantages. They allow for relatively quick data collection compared to some other survey
However, this method also faces challenges. Declining landline usage and increasing use of mobile phones, often