The smoking rates of teens in urban areas are compared to those living in rural areas to see whether teens living in rural settings have higher rates of smoking.
A)Controlled experiment
B)Observational study

Question

Quizplus · Accepted Answer

This is an observational study because the researcher is not manipulating any variables. The researcher is simply observing the smoking rates of teens in urban and rural areas.

The Smoking Rates of Teens in Urban Areas Are Compared