What are the advantages and disadvantages of
probability-based sampling designs compared with nonprobability-based designs?
Could any of the research described in this chapter with a nonprobability-based
design have been conducted instead with a probability-based design? What are
the difficulties that might have been encountered in an attempt to use random
selection? How would you discuss the degree of confidence you can place in the
results obtained from research using a nonprobability-based sampling design?
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