In a study of the effectiveness of a public relations campaign on students at a local university, the researcher randomly selects a sample from four different subpopulations of the total population of students: first year students, second year students, third year students, and fourth & fifth year students together. What sampling method is this researcher using?
a. stratified sampling
b. quota sampling
c. systematic sampling
d. cluster sampling
Answer a,
Communication & Mass Media
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The idea that media have immediate, direct influence on individuals is known as
A) limited effects theory. B) two-step flow model C) powerful effects theory. D) immediacy theory.
Communication & Mass Media
Being deliberative in our interpersonal communication means we are ______.
a. selective b. focused c. constant d. unsure
Communication & Mass Media