Answered

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The difference between an observational study and an experiment is that:

A. In an observational study, only one group is studied, and in an experiment, two groups are studied.
B. In an observational study, the researchers do not control treatment, and in an experiment, they do.
C. In an experiment, cause-and-effect is analyzed, and in an observational study, it is not.
D. In an experiment, one group is studied over a short period of time, and in an observational study, the group is studied over a longer period of time.

Sagot :

GinnyAnswer

Final answer:

Observational studies do not control treatments, while experiments involve applying treatments to analyze cause-and-effect relationships.


Explanation:

An observational study and an experiment differ mainly in how subjects are treated. In an observational study, researchers do not control treatments and simply observe naturally occurring phenomena. On the other hand, in an experiment, researchers apply a treatment to a group of subjects and compare the effects with a control group to analyze cause-and-effect relationships.


Learn more about observational study vs. experiment here:

https://brainly.com/question/36473262


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