Which Statement About the Correlation Coefficient,r,is True

Multiple Choice

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

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