Question: table [ [ WEEK OF , PINTS USED ] , [ August 3 1 , 3 6 0 ] , [ September 7 ,

\table[[WEEK OF,PINTS USED],[August 31,360],[September 7,389],[September 14,410],[September 21,381],[September 28,368],[October 5,374]]
-4.15 Refer to Solved Problem 4.1.
a. Use a 3-year moving average to forecast the sales of Volkswagens in Nevada through year 6.
b. What is the MAD? [PX]
c. What is the MSE?
 \table[[WEEK OF,PINTS USED],[August 31,360],[September 7,389],[September 14,410],[September 21,381],[September 28,368],[October 5,374]] -4.15 Refer

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