To make a demonstration into a true experiment, you must:
A) choose subjects to be exposed to a single treatment at random from a population.
B) have an independent variable.
C) measure more than one dependent variable.
D) make sure that all extraneous variables are held constant within a single treatment group.

Question

Quizplus · Accepted Answer

To make a demonstration into a true experiment, you must have an independent variable that you manipulate to observe its effect on a dependent variable, establishing a cause-and-effect relationship.

To Make a Demonstration into a True Experiment, You Must