Define the following terms: a. Observational study, b. Designed experiment.

Dolly Robinson 2021-06-20 Answered
Define the following terms: a. Observational study, b. Designed experiment.

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Talisha
Answered 2021-06-21 Author has 3753 answers
(a) In an observational study, researchers simply observe characteristics and take measurements, as in a sample survey. These reveal only association.
(b) In a designed experiment, researchers impose treatments and controls and then observe characteristics and take measurements. These can help establish causation.
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