Which statement is true?
a. correlation or association proves causation
b. causation requires either correlation or association
c. causation can exist without correlation or association
d. all correlations indicates casual links
e. if there is correlation, then there is causation

Question

Which statement is true?
 a. correlation or association proves causation
b. causation requires either correlation or association 
c. causation can exist without correlation or association 
d. all correlations indicates casual links
e. if there is correlation, then there is causation

perl · Answer

Correlation does not prove causation. 
A classic example of this is number of churches and crime rate. 
The more churches there are in a given town, the higher the number of crimes. 
Does this show that building churches causes crime to go up?