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3 years ago

12

The difference between an observational study and an experiment is that

1 answer:

lorasvet [3.4K]3 years ago

7 0

Answer:

I think it's the last one! In an experiment, one group is studied over a short period of time---

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12a
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1 year ago

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3 years ago

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Lelu [443]

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<h2>24 students</h2>

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