Respuesta :

There is often more than one variable influencing the other and to statistically control for this, researchers use a control variable.

Control variables are the factors or variables which are kept constant in a study. These factors are kept constant because of their ability to influence the outcomes.

All the variables which have the potential to impact the results should be controlled apart from the given dependent and independent variables. If we don't control the relevant variables, then they may influence our results and we may not get the desired outcome.

To control the variables, certain techniques are used. These are random assignment, standardized procedures and statistical controls.

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