What is the difference between a dependent and an independent variable?

A) Independent variable is the cause, whereas a dependent variable is the effect.
B) Independent variable is called internal variable, whereas a dependent variable is known as external variable.
C) Independent variable has positive linear relationship, whereas dependent variable has negative linear relationship with other variables.
D) Independent variable has a curvilinear relationship, whereas dependent variable has a bi-axial relationship with other variables.

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Andrew Curtis · Accepted Answer

Final Answer : A, Explanation :  An independent variable is the variable that is manipulated or changed in an experiment to observe its effect on the dependent variable. The dependent variable is the variable that is measured or observed in response to changes in the independent variable. Therefore, the independent variable is the cause, and the dependent variable is the effect.

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