Fill in the Remaining Information and Compute the Estimated Value $\quad$

Essay

Fill in the remaining information and compute the estimated value of b Year $\quad$ Marketing Sales $\quad X _ { t } - \bar { X } \quad Y _ { t } - \bar { Y } \quad \left( X _ { t } - \bar { X } \right) \left( X _ { t } - \bar { X } \right) \quad \left( X _ { t } - \bar { X } \right) ^ { 2 }$
(t) $\quad \left( \mathrm { X } _ { \mathrm { t } } \right) \quad \left( \mathrm { Y } _ { \mathrm { t } } \right)$

$\begin{array} { l l l } 1&2&22\\2 & 5 & 30 \end{array}$
$\begin{array} { l l l } 3 & 8 & 37 \end{array}$
$\begin{array} { l l l } 4 & 6 & 34 \end{array}$