Reducing nonresponse. How can we reduce the rate of refusals in telephone survey

Question

Reducing nonresponse. How can we reduce the rate of refusals in telephone surveys? Most people who answer at all listen to the interviewer's introductory remarks and then decide whether to continue. One study made telephone calls to randomly selected households to ask opinions about the next election. In some calls, the interviewer gave her name, in oth- ers she identified the university she was representing, and in still others she identified both herself and the university. The study recorded what percent of each group of interviews was completed. Is this an obser- vational study or an experiment? Why? What are the explanatory and response variables? 9.31

Explanation / Answer

This is an observational study. Because sheis observing the calls. She is observing that how telephone surveys response get change when interviewer tells her name, or university or both.

There is no controlling factor here . She is not manipulating any particular factor.

explanatory variable or independent varibale : NAME, UNIVERSITY( SHE IS REPRESENTING ) AND BOTH (INTERVIEWER NAME + UNIVERSITY NAME)

RESPONSE VARIBALE OR DEPENDENT VARIABLE: LENGTH OF CALL OR HOW INTERVIEWEE RESPONDING OR GIVING OPINION ABOUT ELECTIONS.

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