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). $$\begin{array} { | l | r r r r r r r r | }
\hline \text { Cost } & 9 & 2 & 3 & 4 & 2 & 5 & 9 & 10 \
\hline \text { Number } & 85 & 52 & 55 & 68 & 67 & 86 & 83 & 73 \
\hline
\end{array}$$
A) 0.708
B) -0.071
C) 0.246
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). $$\begin{array} { | l | r r r r r r r r | } 
\hline \text { Cost } & 9 & 2 & 3 & 4 & 2 & 5 & 9 & 10 \
\hline \text { Number } & 85 & 52 & 55 & 68 & 67 & 86 & 83 & 73 \
\hline
\end{array}$$
A) 0.708
B) -0.071
C) 0.246
D) 0.235

Quizplus · Accepted Answer

Using a calculator or a software, we find that the linear correlation coefficient r is approximately 0.708. This indicates a moderately strong positive linear relationship between the cost of advertising and the number of products sold.

Find the Value of the Linear Correlation Coefficient R A) 0708 B) -0

Find the Value of the Linear Correlation Coefficient R A) 0708
B) -0