Consider the Following Annual Sales Data for 2001-2008 -Calculate the Correlation Coefficient

Short Answer

Consider the following annual sales data for 2001-2008:
$$\begin{array} { | c | c | } \hline \text { Year } & \text { Sales } \\\hline 2001 & 2 \\\hline 2002 & 4 \\\hline 2003 & 10 \\\hline 2004 & 8 \\\hline 2005 & 14 \\\hline 2006 & 18 \\\hline 2007 & 17 \\\hline 2008 & 20 \\\hline\end{array}$$
-Calculate the correlation coefficient.