Which of the following are a vital part of randomized experimental studies?
A) Random selection.
B) A control group.
C) A placebo.
D) Making the study double blind.
E) All of the above.

Question

Quizplus · Accepted Answer

All of the options listed are vital components of randomized experimental studies. Random selection ensures that the sample represents the population. A control group allows for comparison to assess the effect of the intervention. A placebo is used to control for the placebo effect, and making the study double-blind minimizes bias by ensuring neither the participants nor the researchers know who is receiving the treatment or the placebo.

Which of the Following Are a Vital Part of Randomized