A Nonparametric Method to Compare Two or More Populations,when the Samples

question 137

Multiple Choice

A nonparametric method to compare two or more populations,when the samples are matched pairs and the data are either ordinal or interval but not normal,is the:

• A)Wilcoxon signed rank sum test.
• B)sign test.
• C)Friedman test.
• D)Kruskal-Wallis test.

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Definitions:

Learned Helplessness

A condition in which a person suffers from a sense of powerlessness, arising from a traumatic event or persistent failure to succeed.

Avoidance Learning

A type of learning in which a subject learns to avoid a stimulus or situation to prevent a negative outcome.

Avoidance Training

A behavioral modification technique where a subject learns to avoid an unpleasant or undesirable outcome by performing a specific behavior.

Skinner Box

An experimental apparatus used to study animal behavior, particularly the effects of reinforcement on learning, developed by B.F. Skinner.