Answer
$\approx-0.64$
Work Step by Step
$\sum x=12$, $\sum y=13$, $\sum xy=33$, $\sum x^2=46$, $\sum y^2=51$, $n=4$(the number of data points)
Thus the correlation coefficient is: $\frac{n(\sum xy)-(\sum x)(\sum y)}{\sqrt{n(\sum x^2)-(\sum x)^2}\sqrt{n(\sum y^2)-(\sum y)^2}}=\frac{4(33)-(12)(13)}{\sqrt{4(46)-(12)^2}\sqrt{4(51)-(13)^2}}\approx-0.64$ where
