Y= a+ bx a is 40000 b is 1000 x is the quarter number i.e year 1 quarter 1 is 1 , year 1 quarter 2 is 2. Seasonal variations are applied as a proportion of the trend and the actual sales in year 1 quarter 1 were 47560 units. It has been decided that this year 1 data is to be used to forcast sales in year 2. Using multiplicative model, what are the forecast sales for year 2 quarter 1? In units?
Please do not simply type out full questions and expect to be provided with a full answer.
You must have an answer in the same book in which you found the question, so ask about whatever it is in the answer that you are not clear about and then I will explain.