Find the Coefficient of Correlation of the Line That Best $\{ ( 2,9 ) , ( 5,15 ) , ( 9,23 ) \}$

Multiple Choice

Find the coefficient of correlation of the line that best fits the data set. $\{ ( 2,9 ) , ( 5,15 ) , ( 9,23 ) \}$

A) $r = 1$
B) $r = - 1$
C) $r = 0.6$
D) $r = - 0.2$
E) $r = 0.2$