Answer: A) 2
Explanation:
The correlation coefficient r has this range of values
[tex]-1 \le r \le 1[/tex]
which can be stated as "r is between -1 and 1, including both endpoints".
As you can see, r = 2 is outside this range and not a possible correlation coefficient. The largest r can get is r = 1 to indicate perfect positive linear correlation.
On the other end of the spectrum, r = -1 means perfect negative linear correlation. In between, r = 0 means no linear correlation at all.
