A ___________ Variable Is a Hypothetical Index That Has Just

question 15

Multiple Choice

A ___________ variable is a hypothetical index that has just two values: 0 for the presence (or absence) of a factor and 1 for its absence (or presence) .

• A) Control
• B) Third
• C) Quantitative
• D) Dummy

---

Definitions:

Sodium Reabsorption

The process by which sodium ions are reabsorbed from the kidney tubules back into the bloodstream, playing a critical role in regulating blood pressure and fluid balance.

Antitussive

A medication used to suppress or relieve coughing.

Cough Reflex

A protective reflex that helps clear the airways of mucus, irritants, and pathogens through a sudden, often repetitive, expulsion of air from the lungs.

Peripheral Nervous Systems

The portion of the nervous system that consists of nerves and ganglia outside of the brain and spinal cord, facilitating communication to the central nervous system.