Variables
a Sample of Eight Observations of Variables X and Y

Short Answer

Variables
A sample of eight observations of variables x and y is shown below: $$\begin{array} { | l | l l l l l l l l | } \hline x & 5 & 3 & 7 & 9 & 2 & 4 & 6 & 8 \\\hline y & 20 & 23 & 15 & 11 & 27 & 21 & 17 & 14 \\\hline\end{array}$$
-Find the best-fit line: $\hat{ Y }$ = ____________________.
Estimate the value of y when x = 5.