i. The strength of the correlation between two variables depends on the sign of the coefficient of 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

The strength of the correlation between two variables is not determined by the sign of the coefficient of correlation; it is determined by the magnitude of the coefficient. A coefficient close to 0 indeed indicates a weak relationship. Coefficients of -0.91 and +0.91 do have equal strength, as the strength is determined by the absolute value of the coefficient.

I the Strength of the Correlation Between Two Variables Depends