The coefficient of correlation
A) is the square of the r-square.
B) is the square root of the r-square.
C) can never be equal to r-square.
D) can never be negative.

Question

Quizplus · Accepted Answer

The coefficient of correlation (r) is the square root of the r-square (R²). Therefore, option B is correct. Option A is incorrect because the r-square is the square of the correlation coefficient, not the other way around. Option C is incorrect because in some cases, the coefficient of correlation can be equal to the r-square. Option D is incorrect because the coefficient of correlation can be negative, indicating a negative correlation between variables.

The Coefficient of Correlation