Determine whether the study depicts an observational study or an experiment
-A researcher obtained a random sample of 100 smokers and a random sample of 100 nonsmokers. Afterinterviewing all 200 participants in the study, the researcher compared the rate of depression among thesmokers with the rate of depression among nonsmokers.
A) observational study
B) experiment

Question

Quizplus · Accepted Answer

This is an observational study because the researcher observes and compares the rates of depression among smokers and nonsmokers without manipulating any variables (such as assigning participants to smoke or not).

Determine Whether the Study Depicts an Observational Study or an Experiment