Given the Following Sample Data ACalculate the Covariance and the Correlation Coefficient

Essay

Given the following sample data:
$$\begin{array} { | l | l l l l l l l l l l | } \hline \boldsymbol { x } & 420 & 610 & 625 & 500 & 400 & 450 & 550 & 650 & 480 & 565 \\\hline y & 2.80 & 3.60 & 3.75 & 3.00 & 2.50 & 2.70 & 3.50 & 3.90 & 2.95 & 3.30 \\\hline\end{array}$$
a.Calculate the covariance and the correlation coefficient.
b.Comment on the relationship between x and y.
c.Determine the least squares line.
d.Draw the scatter diagram and plot the least squares line.