22. When use of telephone exchanges and random numbers to develop a sample of respondents in a
landline phone survey is used, this is called ______.
23. When a respondent is asked to read the questions on a survey and to answer them by himself or
herself, this is an example of a(n) ______.
24. A self-administered questionnaire that is sent to potential respondents through a postal service is called
a(n) ______.
25. The percentage found when the number of completed surveys returned in a mail survey is divided by
the total number of sample members provided a chance to participate is known as the ______.
26. The letter that is on top of a mail survey that explains why the potential respondent should fill out the
survey is called the ______.
27. A researcher who takes a questionnaire to a respondent’s office or home and then comes back to pick
it up is using the _____ method.
28. A self-administered questionnaire posted on a website is called a(n) ______ survey.