If a researcher finds that there is a correlation between secondhand smoke and children's asthma, he can be certain that _____.
A) secondhand smoke causes children's asthma
B) secondhand smoke does not cause children's asthma
C) children exposed to smoke in utero often get asthma
D) asthma and secondhand smoke have some connection

Question

Quizplus · Accepted Answer

The researcher can only conclude that there is a connection or relationship between secondhand smoke and children's asthma, but cannot determine causation.

If a Researcher Finds That There Is a Correlation Between