Question: what are the advantages of using questionnaires in research?
Answer: (1) Economical: It is an economical way of accumulating information. ...  (2) Wide Coverage: ...  (3) Rapidity: ...  (4) Suitable in Special Type of Response: ...  (5) Repetitive Information: ...  (6) An Easier Method: ...  (7) It Puts Less Pressure on the Respondents: ...  (8) Uniformity: