Find the value of the linear correlation coefficient r. The paired data below consist of the costs of advertising (in thousands of dollars)and the number of products sold (in thousands). $\begin{array}{l|rrrrrrrr}
\text { Cost } & 9 & 2 & 3 & 4 & 2 & 5 & 9 & 10 \
\hline \text { Number } & 85 & 52 & 55 & 68 & 67 & 86 & 83 & 73
\end{array}$

A) $0.708$
B) $0.246$
C) $- 0.071$
D) $0.235$

Question

Find the value of the linear correlation coefficient r. The paired data below consist of the costs of advertising (in thousands of dollars)and the number of products sold (in thousands). $\begin{array}{l|rrrrrrrr}
\text { Cost } & 9 & 2 & 3 & 4 & 2 & 5 & 9 & 10 \
\hline \text { Number } & 85 & 52 & 55 & 68 & 67 & 86 & 83 & 73
\end{array}$

A) $0.708$
B) $0.246$
C) $- 0.071$
D) $0.235$

Quizplus · Accepted Answer

The linear correlation coefficient $ r $ is calculated using the formula for Pearson's correlation coefficient. After computing the necessary sums and products, the value of $ r $ is approximately $ 0.708 $, indicating a moderate positive correlation between advertising costs and the number of products sold.

Find the Value of the Linear Correlation Coefficient R A) 0.7080.7080.708

Find the Value of the Linear Correlation Coefficient R A) $0.708$