What is an Independent Variable? - Definition & Explanation


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question 1 of 3

Dr. X does a study with three groups of ten students each. Each group consumes a different amount of caffeine (high, medium, and low amounts). Dr. X then measures all of the students on how well they do on a concentration test. What is the independent variable in this study?

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1. An experiment is done with children in which their teachers in different classrooms teach the same material over the U.S. Civil War, but they use different teaching methods. One teacher uses lectures, one teacher uses group discussion, and one teacher simply asks the students to read the textbook. Then the students all take an essay test over the material. What is the independent variable in this study?

2. What fields use independent variables?

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About this Quiz & Worksheet

This quiz and corresponding worksheet gauge your understanding of independent variables. Topics you'll need to know to pass the quiz include independent and dependent variables.

Quiz & Worksheet Goals

Use these assessment tools to assess your ability to:

  • Identify independent variables in experiments
  • Recall the definition of independent variables
  • Explore the role of control groups
  • Understand the purpose of independent and dependent variables

Skills Practiced

This worksheet and quiz let you practice the following skills:

  • Reading comprehension- ensure that you draw the most important information from the related lesson on independent variables
  • Distinguishing differences- compare and contrast topics from the lesson, such as independent variables and dependent variables
  • Knowledge application- use your knowledge to answer questions about different experiments

Additional Learning

The lesson called What is an Independent Variable? - Definition & Explanation will help you absorb the various subtleties of the subject. This lesson covers the following topics:

  • Define independent variables
  • Distinguish differences between independent variables and dependent variables
  • Explore scientific fields that use independent and dependent variables
  • Identify what a control group and experimental group are
  • Explore examples of experiments