The Statistics ( U or U' ) Used in the Mann-Whitney

question 42

Multiple Choice

The statistics ( U or U' ) used in the Mann-Whitney U test, measure _________.

• A) the differences between the means of the two groups
• B) the direction of the differences between pairs of scores
• C) the power of the experiment
• D) the separation between the two groups

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Definitions:

Pulse Rate

The number of heartbeats per minute, indicating the heart rate; it is often measured at resting conditions.

Orthostatic Hypotension

A form of low blood pressure that happens when standing up from sitting or lying down, causing dizziness or fainting.

Blood Pressure

The pressure exerted by circulating blood upon the walls of blood vessels, typically measured in the arms.

Positional Changes

Adjustments in body position or posture that may relieve symptoms or aid in treatment of medical conditions.