The experimental factor that a researcher manipulates in an experiment is the

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The independent variable is the experimental factor that is manipulated by the researcher in order to observe its effect on the dependent variable. The dependent variable is the outcome that is measured in response to the manipulation of the independent variable. The control group is a comparison group that does not receive the manipulation of the independent variable. The hypothesis is a proposed explanation for a phenomenon, but it is not the same as the experimental factor being manipulated.

The Experimental Factor That a Researcher Manipulates in an Experiment