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:

Cognitive Development

The process of growth and change in intellectual capabilities that occur over the course of a person's life, influencing abilities in problem solving, learning, and reasoning.

Piaget's Stages

A theory of cognitive development that outlines how a child's ability to think progresses through four distinct stages.

Preoperational Stage

A stage in Piaget's theory, occurring roughly between the ages of 2 and 7, characterized by symbolic thinking, egocentrism, and a lack of logical reasoning.