Assume you are planning to interview shoppers in a shopping mall about their views on increased food prices and what the Government should do about them.

1. In what different five ways might you try to motivate shoppers to cooperate in your survey? [10 Marks]
2. Distinguish among response error, interview error and nonresponse error.

[5 Marks]

3. How do environmental factors affect response rates in personal interviews?

[10 Marks]