Determine whether the study depicts an observational study or an experiment. Upp

Question

Determine whether the study depicts an observational study or an experiment.
Upper A study is conducted to determine if there is a relationship between lung capacity andA study is conducted to determine if there is a relationship between lung capacity and proximity to coal mines.proximity to coal mines. Upper A sample of 100 people living within 1 mile of a coal mineA sample of 100 people living within 1 mile of a coal mine is collected and their lung capacity measured.is collected and their lung capacity measured.
Does the description correspond to an observational study or an experiment?
A.
The study is an experiment because the study examines individuals in a sample, but does not try to influence the variable of interest.
B.
The study is an observational study because the researchers control one variable to determine the effect on the response variable.
C.
The study is an observational study because the study examines individuals in a sample, study examines individuals in a sample, but does not try to influence the response variable.
D.
The study is an experimentexperiment because the researchers control one variable to determine researchers control one variable to determine the effect on the response variable.

Explanation / Answer

In fields such as epidemiology, social sciences, psychology and statistics, an observational study draws inferences from a sample to a population where the independent variable is not under the control of the researcher because of ethical concerns or logistical constraints.

C.
The study is an observational study because the study examines individuals in a sample, study examines individuals in a sample, but does not try to influence the response variable.

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