Consider the following statements with regard to correlation coefficient r between random variables x and y.
I. r = +1 or -1 means there is a linear relation between x and y.
II. -1 ≤ r ≤ 1 and r2 is a measure of the linear relationship between the variables.
Which of the above statement(s) is/are correct?
1
Only I
2
Only II
3
Both I and II
4
Neither I nor II