$(1)$ In applying DES, you may obtain initial slope and intercept as you get in Winter$’$s method. Use the

first two weeks data for this purpose. Consider deseasoning and reseasoning as we have applied

with MA in lecture.

$(2)$ In applying Winter$’$s$,$ use its usual procedure as explained in the lecture.

$(3)$ Evaluate your $24$ estimation using MAD and MSE for both methods.