What is an important way to help insure that one's experimental sample of participants is adequately representative of the population from which it is drawn?
a. pretest all participants
b. survey participants about demographic characteristics
c. randomly select participants from the population
d. use a small sample
Question 2
It is useful for a research problem to be stated as precisely as possible because
a. specific questions are more likely to be proved correct.
b. the more specific the question is, the easier it is to get statistical significance.
c. a specific question allows the researcher to focus on only one variable at a time.
d. specific questions help the researcher decide what techniques, participants, and
measures to use.
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