A Researcher Who Is Faced with the Problem of Non-Response

Multiple Choice

A researcher who is faced with the problem of non-response can attempt to reduce the potential bias of the results by

A) replacing each non-respondent with a "matched" member of the sample.
B) making repeated contacts, or call-backs, with non-respondents.
C) improving the research design.
D) estimating the non-response bias.
E) all of these.