An experimenter is studying how time spent on a cell phone affects people's ability to drive safely. Driving the car is the:
dependent variable.
coefficient of correlation.
independent variable.
operational condition.
Im between C and D. Leaning toward C.
Neither.
An independent variable is the potential stimulus or cause, usually directly manipulated by the experimenter, so it could also be called a manipulative variable.
A dependent variable is the response or measure of results.
Does that help you decide?