Find the coefficient of correlation of the line that best fits the data set. $\{ ( 0,8 ) , ( 2,8 ) , ( - 7,19 ) \}$
A) $r = 1$
B) $r = - 0.4887$
C) $r = - 0.6841$
D) $r = 0$
E) $r = - 0.9774$

Question

Find the coefficient of correlation of the line that best fits the data set.   $\{ ( 0,8 ) , ( 2,8 ) , ( - 7,19 ) \}$  
A) $r = 1$
B)  $r = - 0.4887$
C)  $r = - 0.6841$
D)  $r = 0$
E)  $r = - 0.9774$

Quizplus · Accepted Answer

The coefficient of correlation $r$ is calculated using the formula for Pearson's correlation coefficient. After computing the necessary sums and products for the given data points, the result is approximately $-0.9774$.

Find the Coefficient of Correlation of the Line That Best {(0,8),(2,8),(−7,19)}\{ ( 0,8 ) , ( 2,8 ) , ( - 7,19 ) \}{(0,8),(2,8),(−7,19)}

Find the Coefficient of Correlation of the Line That Best $\{ ( 0,8 ) , ( 2,8 ) , ( - 7,19 ) \}$