Ten visitors to an art gallery are asked to rate a Van Gogh painting alongside a sculpture each by Henry Moore and Michelangelo. What test would be used to see if there is a significant difference in ratings amongst the three pieces?
A. Mann–Whitney test
B. Signed-rank test
C. Friedman test
D. Kruskal–Wallis test
Answer: C
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Fill in the blank(s) with correct word
The major threat to the internal validity of research on articulation problems in young children is
a. regression. b. instrumentation. c. mortality. d. maturation. e. selection.
The Family and Medical Leave Act (FMLA) occurs at which level of a family's ecology?
A. family level B. governmental level C. individual level D. community level
Which of the following is a desirable characteristic of assessment instruments for students with severe handicaps?
A. a large number of items B. a narrow sample of behaviors C. highly structured administration procedures D. pass-fail scoring