a$-1.$ Beginning with the errors calculated in week $7,$ calculate MFE and MAD for two$-$week, four$-$week, and six$-$week moving averages.

a$-2.$ Compare the effectiveness of two$-$week, four$-$week, and six$-$week moving averages with respect to MAD. Which should you use to

forecast copier paper use during the next week?

b$-1.$ Using errors from all $24$ weeks, calculate MFE and MAD for exponential smoothing forecast model with smoothing constants of

$0\mathrm{.}01,0\mathrm{.}05,$ and $0\mathrm{.}25.$ Assume a forecast for week $1$ of $230$ reams.

b$-2.$ Compare the performance of the simple exponential smoothing model with smoothing constants of $0\mathrm{.}01,0\mathrm{.}05,$ and $0\mathrm{.}25.$ Assume

a forecast for week $1$ of $230$ reams. Which constant worked best with respect to MAD?