a questionnaire is a predetermined set of questions given to a number of respondents to complete. This instrument is good for getting information from many people. Questionnaires are also appropriate for getting information from people that are spread over a wide area and that are not easy to contact face-to-face. A questionnaire should have a short explanation of what your research is about. As with all data collection methods, questionnaires should always adhere to ethical and moral codes of conduct. An example of a questionnaire in use is the national population census for South Africa, which takes place every ten years