In human factors research, a measured component of total time is
a. interstimulus interval.
b. percent correct.
c. error rate.
d. movement time.
What is the definition of variance?
a. the sum of the scores divided by the number of scores
b. the average distance from the mean
c. the square root of the average distance from the mean
d. the average squared distance from the mean
Under what circumstances should the last name of only the first author of a three- to five-author reference, followed by et al. be included with the citation in the body of the text?
a. always
b. never
c. the first time the citation occurs
d. the second and subsequent times the reference is cited
In human factors research, the most common dependent variable is
a. reaction time.
b. error rate.
c. movement time.
d. heart rate.
If a set of scores has a mean of 45 and a standard deviation of 9, then the scores have a variance of ____.
a. 3
b. 4.5
c. 18
d. 81
Under what circumstances should the last names of all authors of a reference with six or more authors be included with the citation in the body of the text?
a. always
b. never
c. the first time the citation occurs
d. only if necessary to distinguish it from other references
An important reward for researchers working in the area of human factors is the
a. potential to improve human life.
b. opportunity to improve equipment safety.
c. opportunity to carry out research.
d. all of these
It is possible for a distribution of scores to have more than one ____.
a. mean
b. median
c. mode
d. range
Under what circumstances should the last names of all authors of a three- to five-author reference be included with the citation in the body of the text?
a. always
b. never
c. the first time the citation occurs
d. only if necessary to distinguish it from other references
The first commandment of human factors is
a. honor thy machine..
b. blessed is technology..
c. honor thy user..
d. complexity is best..
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