Information obtained about a research participant during the course of a study
a. is not confidential.
b. is always confidential.
c. is confidential unless otherwise agreed upon in advance.
d. is confidential for a five year period only.
The _____ is a nonparametric inferential test for comparing sample medians of two dependent or related groups of scores.
a. Wilcoxon matched-pairs signed-ranks T test
b. Wilcoxon rank-sum test
c. 2 test for independence
d. 2 goodness-of-fit test
A limitation of using matching rather than random assignment to form groups in a between-subjects experiment is that matching ____.
a. requires another level of work
b. increases error due to participant differences
c. requires at least twice as many participants
d. increases the need for control groups
The reliability ratio is expressed as ____.
a. var(T) / var(X)
b. var(X) / var(T)
c. rel(X) / rel(T)
d. rel(T) / rel(X)
Which of the following is NOT considered plagiarism?
a. taking credit for someone else's ideas, data, or words
b. using someone else's words without quotation marks or proper citation.
c. using someone else's ideas.
d. giving credit to someone else's ideas without quoting him or her directly
Which of the following is not an assumption of the Wilcoxon matched-pairs signed-ranks T 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. The other alternatives are all assumptions of the Wilcoxon matched-pairs signed-ranks test.
Which approach is most effective in preventing confounding by participant characteristics?
a. matching the characteristics across treatments
b. randomizing the variable across treatment
c. including a no-treatment control group
d. having a placebo control group
The proportion of truth in a set of scores across your sample can be thought of as ____.
a. validity
b. reliability
c. variability
d. power
Except in _________ research, the experimenter establishes a clear and fair agreement with research participants prior to their participation.
a. research involving no known risks
b. deceptive
c. high-risk
d. experimental
Which of the following is not an assumption of the Wilcoxon rank-sum test?
a. The data are ratio, interval, or ordinal in scaleall 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.
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