Which of the following is not an assumption of the Wilcoxon rank-sum test?
a. The data are ratio, interval, or ordinal in scale—all of which must be converted to ranked (ordinal) data before conducting the test.
b. The underlying distribution is not normal
c. The observations are independent.
d. There is homogeneity of variance.
d
Psychology
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Baby Henry enters Piaget's Substage 4 of the sensorimotor period when his schemes
A) are directed toward his body. B) are repeated with variation to produce new outcomes. C) are coordinated deliberately to solve simple problems. D) represent sudden solutions rather than trial-and-error solutions.
Psychology
Which of the following children would be judged most harshly by other children?
A) Monica, who does not like to play with dolls B) Kate, who likes to play football C) Roger, who likes to play with dolls D) Eric, who does not like to play with younger children
Psychology