Question

What is the correlation coefficient, r, for this data?Round your answer to the nearest tenth.

Answer 1

$\begin{gathered} r=\frac{\sum (x_i-\bar{x)}(y_i-\bar{y)}}{\sqrt[]{\sum (x_i-\bar{x})^2\sum (y_i-\bar{\bar{y}})^2}^{}} \\ =\frac{1643.2}{\sqrt[]{(982.8)(3284.8)}} \\ r=0.9 \end{gathered}$