In an experiment, the variable that is manipulated or controlled by the researcher is the

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The variable that is manipulated or controlled by the researcher is the independent variable. This variable is changed or manipulated by the researcher to observe its effect on the dependent variable, which is the outcome or response that is being measured. The control variable is a variable that is kept constant in an experiment to ensure that any changes observed in the dependent variable are a result of the independent variable and not due to any other factor. The therapy variable is not a commonly used term in experimental research.

In an Experiment, the Variable That Is Manipulated or Controlled