To Use the Wilcoxon Rank Sum Test as a Test

question 126

Multiple Choice

To use the Wilcoxon Rank Sum Test as a test for location,you must assume that

• A)the obtained data are either ranks or numerical measurements that will be converted to combined ranks.
• B)both samples are randomly and independently drawn from their respective populations.
• C)both underlying populations from which the samples were drawn are equivalent in shape and dispersion.
• D)All the above.

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Definitions:

Operational Definition

A clear, precise description of how variables in a study will be measured or manipulated, making research findings replicable and understandable.

Construct Validity

The extent to which a test measures what it claims to be measuring, indicating the accuracy of the construct it represents.

Operational Definitions

Observable operations, procedures, and measurements that are based on the independent and dependent variables.

Internal Validity

The extent to which a study can demonstrate a causal relationship between variables, minimizing the influence of external factors.