The primary characteristic of a probability sample is considered to be what?
a. Self-selection of subjects
b. Random selection of the sample
c. Subjects handpicked by the researcher
d. Representation of proportional segments of the population
ANS: B
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A Self-selection of subjects would be antithetical to probability sampling.
B The primary characteristic of a probability sample is random selection.
C Subjects being handpicked by a researcher represents a purposive sample, which is not a form of probability sampling.
D Proportional segment representation can be found in quota sampling, which is a form of nonprobability sampling.
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