The data below are the number of hours worked (per week) and the final grades of 9 randomly selectedstudents from a drama class. Calculate the linear correlation coefficient. $$\begin{array} { l | c | c | c | c | c | c | c | c | c | }
\text { Hours worked, } \mathrm { x } & 3 & 6 & 9 & 7 & 12 & 5 & 18 & 11 & 8 \
\hline \text { Final Grade, } \mathrm { y } & 91 & 79 & 73 & 75 & 64 & 85 & 48 & 69 & 75
\end{array}$$
A) -0.991
B) -0.888
C) -0.918
D) -0.899

Question

The data below are the number of hours worked (per week) and the final grades of 9 randomly selectedstudents from a drama class. Calculate the linear correlation coefficient. $$\begin{array} { l | c | c | c | c | c | c | c | c | c | } 
\text { Hours worked, } \mathrm { x } & 3 & 6 & 9 & 7 & 12 & 5 & 18 & 11 & 8 \
\hline \text { Final Grade, } \mathrm { y } & 91 & 79 & 73 & 75 & 64 & 85 & 48 & 69 & 75
\end{array}$$
A) -0.991
B) -0.888
C) -0.918
D) -0.899

Quizplus · Accepted Answer

The correct answer is A because the linear correlation coefficient is -0.991, which indicates a strong negative linear relationship between the number of hours worked and the final grades.

The Data Below Are the Number of Hours Worked (Per