Using the Product Forecasting Information that has been provided from FY$2017$ through FY$2020($four years$),$ calculate the measures of forecast accuracy $($MFE$,$ MAD, and MAPE$)$ for the Weighted Moving Average $($MA$)$ and the Exponential Smoothing $($EXP$)$ approaches to forecasting.

a$)$ What are the values of MFE, MAD, and MAPE for each of these two approaches to forecasting $($MA and EXP$)?$ Which of the approaches is more accurate?

b$)$ Do these forecasts seem adequate for the purposes of decision making? Why or why not?