The most important advantage of experiments over observational studies is
A) experiments are usually easier to carry out.
B) a well-designed experiment can give good evidence that the treatments actually cause the response.
C) an experiment can compare two or more groups.
D) we can use randomization to avoid bias in designing an experiment.
E) we can study the relationship between two or more explanatory variables.

Question

Quizplus · Accepted Answer

The most important advantage of experiments over observational studies is that a well-designed experiment can give good evidence that the treatments actually cause the response. This is because in an experiment, the researcher has control over the variables being manipulated, and can randomly assign participants to different treatments, which helps to reduce the impact of confounding variables. In contrast, observational studies can often only identify associations between variables, rather than causal relationships.

The Most Important Advantage of Experiments Over Observational Studies Is