In an experiment, a researcher manipulates one variable to see how it affects a second variable. The manipulated variable is called the ________.
A) independent variable
B) experimental variable
C) dependent variable
D) placebo

Question

Quizplus · Accepted Answer

The independent variable is the variable that is being manipulated by the researcher in an experiment to examine its effect on another dependent variable. The dependent variable, in turn, is expected to change as a result of the manipulation of the independent variable. The experimental variable is also similar to the independent variable, but it is not a commonly used term in research methodology. The placebo, on the other hand, is a substance or treatment with no therapeutic effect that is used as a control in experiments to compare with the actual treatment or intervention.

In an Experiment, a Researcher Manipulates One Variable to See