The Data Below Are the Final Exam Scores of 10

question 55

Multiple Choice

The data below are the final exam scores of 10 randomly selected calculus students and the number of hoursthey slept the night before the exam. Calculate the linear correlation coefficient. $$\begin{array} { l | c | c | c | c | c | c | c | c | c | c | } \text { Hours, } \mathrm { x } & 4 & 6 & 3 & 9 & 3 & 5 & 5 & 6 & 7 & 4 \\\hline \text { Scores, } \mathrm { y } & 74 & 89 & 69 & 97 & 75 & 87 & 94 & 99 & 99 & 80\end{array}$$

• A) 0.847
• B) 0.991
• C) 0.761
• D) 0.654

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