Suppose the correlation between two variables (z, y) in a data set is determined to be r = 0.67 What must be true about the slope, b, of the least-squares line estimated for the same set of
data?
A. O The slope will have the opposite sign as the correlation.
B. O The slope will also be a value between-1 and 1.
c. O The slope will have the same sign as the correlation.
D. O The slope b is always equal to the square of the correlation r.