Independent variable is defined as

Independent variable is defined as

• A. Dependent variable
• B. Independent variable
• C. Control variable
• D. Moderator variable

Answer: (B)

The concept being tested is how we identify the variable that researchers actively change to observe an effect. An independent variable is the variable you deliberately manipulate to see if it causes a change in the outcome. It is the presumed cause in the study. For example, changing the amount of sunlight in a plant growth experiment is the independent variable, while the height of the plant is the dependent variable—the outcome you measure. Other roles to note: the dependent variable is what you measure; a control variable is kept constant so it doesn’t influence results; a moderator variable affects the strength or direction of the relationship between the independent and dependent variables.

The concept being tested is how we identify the variable that researchers actively change to observe an effect. An independent variable is the variable you deliberately manipulate to see if it causes a change in the outcome. It is the presumed cause in the study. For example, changing the amount of sunlight in a plant growth experiment is the independent variable, while the height of the plant is the dependent variable—the outcome you measure. Other roles to note: the dependent variable is what you measure; a control variable is kept constant so it doesn’t influence results; a moderator variable affects the strength or direction of the relationship between the independent and dependent variables.