Question

Determine whether the given description corresponds to an observational study or an experiment. in a study of 448448 childrenchildren with a particular​ disease, the subjects completed a survey aboutcompleted a survey about their diet.their diet. does the given description correspond to an observational study or an​ experiment?

Answer 1

I'd say that the answer is observational study because they're just analyzing the data and if it were an experiment they'd be taking data and comparing it.