Advantages

• Pratical Advantages

  Quick and cheap

  No staff needed as they are returned

  Data is easy to quantify, particularly where closed-end questions are used
• Reliability

  Seen as reliable as:

  When the research is repeated, a questionnaire identical to the origional one is used

  There is no researcher present to influence answers
• Quetionnaires are a detached and objective method
• Representativeness

  Questionnaires are representative as they can collect data from a large number of people, making it more representative of the whole population
• Ethical Issues

  Questionnaires pose fewer ethical problems than most research methods as respondents are under no pressure to answer the questions.