1. Explain why a might want to do focus group inters-sews rather than individual inter-views with the same people. 2. between qualitative and quantita-tive approaches to research—and give some of the key advantages and limitations d each ap-proach. 3. Define response rate and discuss why a market-ing manager might be concerned about the re. sponse rate achieved in a particular survey. Give an example. 14. Prepare a table that scene of the key advantages and limitations of mad, telephone, and personal inlets-1m approaches for adminis-tering questionnaires.