If Two Variables Are Positively Related, Then

question 412

Multiple Choice

If two variables are positively related, then

• A) they move in opposite directions.
• B) they are independent of each other.
• C) they move in the same direction.
• D) their graph will have a negative slope.

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Definitions:

SA Node

The sinoatrial node, often called the SA Node, acts as the natural pacemaker of the heart, initiating the heart's electrical impulse.

Sphygmomanometer

A device used to measure blood pressure by applying pressure to an artery and gradually releasing it.

Blood Pressure

The force exerted by circulating blood on the walls of the body's arteries, a critical indicator of cardiovascular health.

Plethysmograph

An instrument used for measuring changes in volume within an organ or whole body (often through blood flow).