Which situation is an example of an observational study?

A. Finding out the number of monthly burglaries of a residential neighborhood for a statistical study for the police
B. Collecting the cholesterol readings of a group of people in a certain age group in a small town
C. Calling a sample of registered voters before an election to find out what issues concern them most
D. Testing the effectiveness of a new hair product by allowing one group to use it and comparing results against a group that doesn’t use it
I think it's A or B, can someone help me?

Question

Which situation is an example of an observational study?

A.	Finding out the number of monthly burglaries of a residential neighborhood for a statistical study for the police
B. Collecting the cholesterol readings of a group of people in a certain age group in a small town
C. Calling a sample of registered voters before an election to find out what issues concern them most
D. Testing the effectiveness of a new hair product by allowing one group to use it and comparing results against a group that doesn’t use it
I think it's A or B, can someone help me?

anonymous · Answer

@563blackghost can you help me?

563blackghost · Answer

An observational study is where you don't manipulate anything, you just observe and try to make correlations based on your observations. 

Yes it would be either A or B....but with what is stated above what answer to feel is the most correct?

563blackghost · Answer

to you feels the most correct* my stupid grammer is off today....

anonymous · Answer

i think A but im noy sure :( @563blackghost

563blackghost · Answer

You are correct ^^