Question

What is the difference between an observational and a designed study?

Study design
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asked 2021-05-03
What is the difference between an observational and a designed study?

Answers (1)

2021-05-04
A designed study is an experiment in which the analyst controls the specification of the treatments and the method of assigning the experimental units to each treatment. An observational study is a study in which the analyst simply observes the treatments and the response on a sample of experimental units.
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