Use the following information for questions:
Decide if the study is an observational study or an experiment.
-A study compared a group of men who had heart attacks with a similar group of controls. The proportion of men with male pattern baldness was compared between the two groups.
A) Observational Study
B) Experiment

Question

Use the following information for questions:
 Decide if the study is an observational study or an experiment.
-A study compared a group of men who had heart attacks with a similar group of controls. The proportion of men with male pattern baldness was compared between the two groups.
A) Observational Study
B) Experiment

Quizplus · Accepted Answer

This is an observational study because the researchers simply observed and compared existing conditions (male pattern baldness in men who had heart attacks versus controls) without manipulating any variables.

Use the Following Information for Questions