If There Is No Effect of the Independent Variable in an Experiment

question 61

Multiple Choice

If there is no effect of the independent variable in an experiment, then:

• A) between-groups variance equals zero.
• B) between-groups variance is greater than within-groups variance.
• C) between-groups variance is less than within-groups variance.
• D) between-groups variance equals within-groups variance.

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Definitions:

Blood Pressure

The pressure of circulating blood against the walls of blood vessels, a critical parameter in determining heart health.

Medulla Oblongata

The lower portion of the brainstem, controlling vital body functions such as breathing, heart rate, and blood pressure.

Midbrain

A portion of the brainstem that plays an important role in vision, hearing, motor control, sleep/wake, arousal (alertness), and temperature regulation.

Pons

A part of the brain located above the medulla oblongata and in front of the cerebellum, playing key roles in the regulation of breathing and sleep.