Extract the demand data for department $93$ in store $2$ and prepare a scatter plot for that data.

Determine the most appropriate form of exponential smoothing $($single$,$ double, or triple$)$ and

apply that method to forecast weekly demands. Use $0\mathrm{.}15$ for any and all smoothing constants

$(\backslash$alpha $,\backslash$beta $,\backslash$gamma $).$ Report the MSE, MAD, and MAPE over all your forecasts.