The term relative frequency refers to
A) the expected number of times a particular outcome of an experiment will be obtained.
B) the frequency of a particular result when an experiment is repeated.
C) the expected result if an experiment is repeated frequently.
D) the number of times something occurs relative to the number of times it could have occurred.
D
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Why do researchers recommend against widespread use of polygraph tests? a. Only people with a PhD can administer a polygraph
b. Most people can accurately judge who is lying without any help. c. Polygraph tests require expensive equipment ordinarily limited to major hospitals. d. Polygraphs often identify an innocent person as lying.
Participants in an experiment are asked to look at pictures of different infants and rate the attractiveness of each infant on a 10-point scale. The participants are tested in groups of three and indicate their ratings aloud. For almost all of the infants, the participants tend to give ratings similar to other group members. We can be most certain that their ratings represent private conformity
rather than public conformity if a. they exhibit much less conformity in the presence of the experimenter. b. they give the same ratings alone as they do in the group. c. their ratings result from their desire to fit in with the rest of the group members. d. they are not especially motivated to be accurate in their judgments.
Since Jane suffers from illness anxiety disorder, we can expect her to see her physician a. often and feel completely reassured that there is nothing wrong with her health. b. rarely but continue to believe that she is quite ill
c. almost never because she does not trust physicians. d. often but continue to be anxious about her health anyway.
Melissa is using the three measures of central tendency, which are types of
a. nominal scales. b. ordinal scales. c. descriptive statistics. d. inferential statistics.