What confounding variable occurs when the researchers gradually change their observation criteria over the course of the study?
A) regression toward the mean
B) instrumentation
C) maturation
D) history
Answer: B
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In purposive sampling, a researcher should continue to select interviewees until which of the following things have been achieved?
A. Quotas have been met. B. Completeness and saturation have been achieved. C. Time and other resources have run out. D. Probability of selection has been determined.
Outline some of the typical components that appear in most state constitutions
What will be an ideal response?
In a confederation, the national government has
a. all the power. b. equal power with the states. c. virtually no power. d. A combination of a, b, and c, depending on the situation e. None of the above
Which of the following problems is NOT solved by using random-digit dialing in order to select a sample for a national survey?
A. Some people do not have telephones. B. Some people have unlisted numbers. C. It is a huge task to gather all the telephone directories for a national telephone survey. D. The listings in telephone directories are somewhat out of date by the time the directory is published and they become more out of date as time passes.