$$\begin{array} { c | c | c | c | c | l }
\overline { \mathrm { x } } & \mathrm { s } _ { \mathrm { x } } & \overline { \mathrm { y } } & \mathrm { s } _ { \mathrm { y } } & \mathrm { r } & \hat { \mathrm { y } } = \mathrm { b } _ { 0 } + \mathrm { b } _ { 1 \mathrm { x } } \
\hline 3.0 & 1.2 & ? & 120 & ? & \hat { \mathrm { y } } = - 120 + 60 \mathrm { x }
\end{array}$$
A) $\overline{y}$ = 60; r = 0.60
B) $\overline{y}$ = 180; r = -0.60
C) $\overline{y}$ = -117; r = 0.50
D) $\overline{y}$ = -48; r = 0.03
E) $\overline{y}$ = -300; r = 0.50

Question

$$\begin{array} { c | c | c | c | c | l } 
\overline { \mathrm { x } } & \mathrm { s } _ { \mathrm { x } } & \overline { \mathrm { y } } & \mathrm { s } _ { \mathrm { y } } & \mathrm { r } & \hat { \mathrm { y } } = \mathrm { b } _ { 0 } + \mathrm { b } _ { 1 \mathrm { x } } \
\hline 3.0 & 1.2 & ? & 120 & ? & \hat { \mathrm { y } } = - 120 + 60 \mathrm { x }
\end{array}$$
A) $\overline{y}$ = 60; r = 0.60
B) $\overline{y}$ = 180; r = -0.60
C) $\overline{y}$ = -117; r = 0.50
D) $\overline{y}$ = -48; r = 0.03
E) $\overline{y}$ = -300; r = 0.50

Quizplus · Accepted Answer

The correct answer is A because the slope of the regression line is 60 and the correlation coefficient is 0.60.

A) y‾\overline{y}y​ = 60; R = 0 y‾\overline{y}y​ = 180; R = -0

A) $\overline{y}$ = 60; R = 0 $\overline{y}$ = 180; R = -0