This is an easy process but by no means random. It is possibly representative in certain respects, though this is still unlikely. The convenience nature of such sampling is often seen in social science surveys. Researchers conducting face to face, telephone, or e-mail interviews must follow the same sample selection procedures they would follow for questionnaire research. In person, on the telephone or e-mail interviews allow longer periods of contact between the researcher and the study participants.
Interviews let researchers ask probing and follow up questions for clarification.
The objectives of the interview must be well defined and understood by trained interviewers. Focus groups Used widely in marketing research, focus group study is also utilized in various other research areas. This intensive group interviewing is used to solicit ideas, feedback, and constructive evaluation of products, issues, and future promotional ideas. Questionnaires Written surveys or questionnaires are the backbone of successful surveys. After carefully considering the topic and the audience, researchers construct questions to ensure the most useful responses provide the needed information.