negative values. \begin{tabular}{|c|c|c|c|c|} \hline Week & Sales & WeightedMovingAverageForecast & ForecastError & (Error) 2 \\ \hline 1 & 16 & & & \\ \hline 2 & 22 & & & \\ \hline 3 & 19 & & & \\ \hline 4 & 26 & & & \\ \hline 5 & 17 & & \\ \hline 6 & 18 & & \\ \hline 7 & 22 & & \\ \hline 8 & 16 & & \\ \hline 9 & 23 & & \\ \hline 10 & 21 & & \\ \hline 11 & 16 & & \\ \hline 12 & 21 & & \\ \hline \end{tabular} MSE= Prefer the moving average here. The input in the box below will not be graded, but may be reviewed and considered by your instructor