In a randomized experiment, if there are large differences in outcomes among the treatment groups, we can conclude that the differences are due to _____________________.
A) random luck
B) the treatments
C) experimental error
D) deliberate data manipulation

Question

Quizplus · Accepted Answer

The purpose of a randomized experiment is to eliminate any potential confounding variables that may affect the outcome. Therefore, if there are large differences in outcomes among the treatment groups, it is most likely due to the treatments themselves, as they are the only factor deliberately manipulated in the experiment. It would be unlikely that the differences are due to random luck or experimental error, and deliberate data manipulation would be unethical and not in the spirit of the scientific method.

In a Randomized Experiment, If There Are Large Differences in Outcomes