Use the data in the Excel file for this assignment. These data represent sales $($in units$)$ of a new

dessert item recently added to a restaurant's menu. So far, the restaurant has been selling the

item for $12$ weeks and wants to forecast what sales will be in the upcoming week $($week $13).$

Construct both a na$$ve $($na$$ve forecast with stable time$-$series$)$ and moving average forecast.

For the moving average forecast, average the previous five periods. For each technique, provide

the forecasted values for both week $13$ as well as all of the previous weeks that the technique will

allow. Calculate the errors and MAD and MAPE. Based on these metrics, state which forecasting

technique seems to work better for these data.