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Are variables interchangeable?

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Can independent and dependent variables be interchangeable? Why or why not?

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The independent variable is also called an experimental variable. It is the variable being influenced in the research in order to show the result to the dependent variable. The dependent variable is also called the response variable. It is the variable being observed in the experiment.

Dependent variables are trials that is related in a few ways. For example, in a study of the efficiency of a blood pressure medicine, one might sample from a collection of people and test the blood pressure before and after using the drug being studied. That would be two variables (before and after), but one would expect the ...

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This solution looks at the interchangeability of independent and dependent variables.