In an experiment, the variable that is observed and measured to assess the effect is the?

In an experiment, the variable that is observed and measured to assess the effect is the?

• A. Dependent variable
• B. Independent variable
• C. Respiratory rate
• D. Pulse

Answer: (A)

The variable being observed and measured to determine the effect of changing something else is the dependent variable. It reveals what happens as you modify another factor, known as the independent variable. For example, if you change the drug dose (the independent variable) and then measure how the heart rate changes, heart rate is the dependent variable because it’s the outcome you quantify to assess the effect. Respiratory rate and pulse are examples of specific measurements that could serve as a dependent variable in a study, but the general term for what you measure to see the effect is the dependent variable. The independent variable is the factor you deliberately change, not the outcome you observe.

The variable being observed and measured to determine the effect of changing something else is the dependent variable. It reveals what happens as you modify another factor, known as the independent variable. For example, if you change the drug dose (the independent variable) and then measure how the heart rate changes, heart rate is the dependent variable because it’s the outcome you quantify to assess the effect. Respiratory rate and pulse are examples of specific measurements that could serve as a dependent variable in a study, but the general term for what you measure to see the effect is the dependent variable. The independent variable is the factor you deliberately change, not the outcome you observe.