Why is it important that an experiment include a control group?
A) The researcher predetermines the results for the control group.
B) The control group provides a reserve of experimental subjects.
C) A control group is required for the development of an "If…then" statement.
D) A control group assures that an experiment will be repeatable.
E) Without a control group, there is no basis for knowing if a particular result is due to the variable being tested.

Question

Quizplus · Accepted Answer

Without a control group, there is no basis for knowing if a particular result is due to the variable being tested. The control group serves as a basis of comparison to see if the experimental group shows any significant changes that can be attributed to the variable being tested. This helps ensure the validity and reliability of the experimental results.

Why Is It Important That an Experiment Include a Control