Articles > Quizzes & Surveys > Independent variable definition – quiz Independent variable definition – quiz Quiz Choose the best answer. 1. What is an independent variable? A variable affected by other variables A variable that is not affected by other variables A variable that depends on other variables 2. Refers to a variable having an impact on the relationship between the independent and the dependent variables Extraneous variable Confounding variable Controlled variable 3. Refers to a variable that is kept constant Extraneous variable Confounding variable Controlled variable 4. Numerical type of independent variable, e.g. in amounts or scales Quantitative Qualitative Outcome 5. The type of independent variable that is non-numerical Quantitative Qualitative Predictor Send Your Results (Optional) Your Name To Email Time is Up!