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In probability sampling strategies, margin of error and
confidence interval are independent - Answer-- true
- one can select, for example a 99% confidence interval
and a 5% margin error
Sampling is based on the concept that a much smaller
randomly selected group can yield approx. the same
findings as one would obtain with interviewing every
person in that population - Answer-- true
- the notion behind sampling theory is that a small set of
observations can tell you something about the larger
population
The type of sampling where one respondent leads the
researcher to another possible participant is called -
Answer-snowball sampling
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snowball sampling - Answer-- recruitment of participants
based on word of mouth or referrals from other
participants
- non-probability sampling
It is not uncommon for mail surveys to have response
rates of less than 30%. - Answer-true
Incentives seem to increase response rates - Answer--
true
- incentives make people want to participate because they
recieve something in return
- do not have to be expensive
One major advantage of a personal interview over a
mailed survey is ______ - Answer-The ability to observe
the respondent (e.g. reactions) and the surroundings and
also ability to present visual aid
___________ is a pretest of a survey instrument to make
sure that potential respondents understand the questions
as intended - Answer-Pilot study
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pilot study - Answer-a study completed before (or
sometimes after) the study of primary interest, usually to
test the effectiveness or characteristics of the intervention
on a smaller sample before the major study
Lengthy surveys and complicated questions are most
easily handled by which method? - Answer-personal
interview
Mailed surveys can be considered unobtrusive research? -
Answer-True
unobtrusive research - Answer-- using existing data that
does not involve interaction with research subjects
- does not collect new data
- secondary data analysis and content analysis
How is a researcher who wants to conduct only secondary
data analysis limited? - Answer-- May not exist or if it does
may not be available for years or locations in which the
researcher is interested
- Could be incomplete or sloppy records, or data that has
questionable reliability