$($a$)$ By hand, draw a scatter diagram treating $x$ as the explanatory variable and $y$ as the response variable.

$($b$)$ Select two points from the scatter diagram and find the equation of the line containing the points selected.

$($c$)$ Graph the line found in part $($b$)$ on the scatter diagram.

$($d$)$ By hand, determine the least$-$squares regression line.

$($e$)$ Graph the least$-$squares regression line on the scatter diagram.

$($f$)$ Compute the sum of the squared residuals for the line found in part $($b$).$

$($g$)$ Compute the sum of the squared residuals for the least$-$squares regression line found in part $($d$).$

$($h$)$ Comment on the fit of the line found in part $($b$)$ versus the least$-$squares regression line found in part $($d$).$

$7.[$NW$]$

$\backslash$table$[[x,3,4,5,7,8],[y,4,6,7,12,14]]$