Question 1. If you collect your own personal interview data, you assure yourself of consistency (i.e., if you want things done right, do it yourself). Practicality dictates that you will often need help to collect substantial data in the field, but this brings with it some glaring problems. Suppose a study involved going into high schools, observing student behavior in the cafeteria and interviewing a diverse group of students from each school. What are some of the problems you could foresee and what would you do to prevent them?
Question 2. Is it ever okay to just toss a survey response, even if nothing is missing from it? If so, under what circumstances would it be justified? Please give specific examples if that helps.
Question 3. In going over survey responses, you discovered that about 10% of them had unanswered questions. Some of the missing responses were demographic (e.g., not disclosing one's age) while others were key variables (e.g, not answering the "likelihood to return" question). How should this situation be handled?