Mathematics, 02.04.2020 09:23 poppy1173

Between an observational study and an experiment is that
O in an observational study, only one group is studied, and in an experiment, two group
O in an observational study, the researchers do not control treatment, and in an experi
O in an experiment, cause-and-effect is analyzed, and in an observational study, it is n
O in an experiment, one group is studied over a short period of time, and in an observa
longer period of time.
SEE R

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Between an observational study and an experiment is that
O in an observational study, only one...