i. A correlation coefficient of -1 or +1 indicates perfect correlation. ii. A coefficient of correlation close to 0 (say, 0.08) shows that the relationship between two variables is quite weak.
iii. Coefficients of -0.91 and +0.91 have equal strength.
A) (i), (ii), and (iii) are all correct statements.
B) (i) and (ii) are correct statements but not (iii).
C) (i) and (iii) are correct statements but not (ii).
D) (ii) and (iii) are correct statements but not (i).
E) (i), (ii), and (iii) are all false statements.

Question

Quizplus · Accepted Answer

All three statements are correct. A correlation coefficient of -1 or +1 does indicate a perfect correlation, whether negative or positive. A coefficient close to 0 indicates a weak relationship between two variables. Coefficients of -0.91 and +0.91 do indeed have equal strength in terms of the relationship's intensity, but they differ in direction.

I a Correlation Coefficient of -1 or +1 Indicates Perfect