Which of the following is true for a controlled experiment?

Question

Quizplus · Accepted Answer

A controlled experiment must have an experimental group and a control group that are tested in parallel. This allows for comparisons to be made between the two groups and helps eliminate the influence of variables other than the one being tested. The other options are not necessarily true for all controlled experiments. While it may be beneficial to proceed slowly and keep variables constant, these are not requirements for a controlled experiment. Similarly, the experiment may not need to be repeated many times, although replication can increase the reliability of the results. The presence of an experienced scientist to supervise the experiment may also vary depending on the context.

Which of the Following Is True for a Controlled Experiment