If data set A of (x,y) data has correlation coefficient r=0.65, and a second data set B has correlation r= -0.65, then
(a) the points in A exhibit a stronger linear association than B.
(b) the points in B exhibit a stronger linear association than A.
(c) neither A nor B has a stronger Linear association.
(d) you can't tell which data set has a stronger linear association without seeing the data or seeing the scatter plots.
(e) a mistake has been made--r cannot be negative.