Explain how both the size of the sample and the homogeneity (sameness) of the population affect the degree of error due to chance within a research study.
What will be an ideal response?
The larger the sample, the more confidence we can have in the sample's representativeness; the more homogeneous the population, the more confidence we can have in the representativeness of a sample of any particular size; the fraction of the total population that a sample contains does not affect the sample's representativeness unless that fraction is large.
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Studies have shown that political action committees (PACs) contribute disproportionately to incumbent candidates. Why do PACs pursue this strategy in their campaign contributions?
What will be an ideal response?
All of the following are distractions that keep people from voting in a U.S. presidential election except people
a. are often working. b. must often find childcare. c. often have school commitments. d. often prefer to relax on the weekend.