AP Statistics Question (This was on one of my class tests)

Calculus
Thu, 08 Feb 2007 15:28:19 +0000

A scatterplot of a variable Y versus a variable X produced the scatterplot below (it’s just a constant value of Y=1 while x increases (perfectly horizontal line)). The value of Y for all values of X is 1.0. The correlation between Y and X is:
A) +1, because the points lie perfectly on a line
B)either +1 or -1, because the points lie perfectly on a line
C) 0, because Y does not change as X increases
D) none of the above

Try and show your work, please.

I’m getting a certain answer, that I don’t want to say. This was a test question and the teacher is saying that the answer is (C) but I contend that it can’t be. See what you guys get.

P.S. I know this is an active forum and none of the rest really are, so please help. :)