Which Statement About the Correlation Coefficient, R, Is True

Multiple Choice

Which statement about the correlation coefficient, r, is true?

A) Data obtained by using rating scales with a small number of categories tends to deflate r.
B) The calculation of r assumes that X and Y are metric variables whose distributions have the same shape.
C) The correlation coefficient computed for a population is denoted by q(rho) .
D) All of the statements are true.