The use of nonmanipulated variables is required when an independent variable exists without the experimenter's intervention.

Question

Quizplus · Accepted Answer

Nonmanipulated variables are variables that are not manipulated by the experimenter, but they still affect the outcome of the experiment. These variables are often natural phenomena or pre-existing conditions that the experimenter cannot manipulate. Sometimes, an independent variable may already exist without any intervention from the experimenter, and in these cases, nonmanipulated variables must be used in order to study the relationship between the independent variable and the dependent variable.

The Use of Nonmanipulated Variables Is Required When an Independent