Why are you even taking the classes you are taking?
I don't want to be rude but it's pretty clear you aren't learning even the slightest bit from them.
This question is utterly basic.
Do you have any understanding of what correlation is at all? Do you care?
Does the info in this class just not matter to your career pursuits at all? I could understand that if it's an elective they forced on you.
But if you are going to need to have an basic understanding of this stuff to do whatever job you are hoping for just having us spoon feed you the answers is going to do you more harm than good in the long run.