Given the data sales below from an auto sale, use the Na$$ve method to make a forecast for month $3,$ and then use that information to make a forecast with the Exponential Smoothing $($ES$)$ method $($alpha $=0\mathrm{.}8)$ for months $4$ and $5.$ Compute the MAD for your forecasts $(2$ decimal points$)$

Hint: Since we don't have the actual Auto Sales for month $5,$ we can't really compute the error for that period. So$,$ we will leave it out of MAD computation.