A local moving company has collected data on the number of moves they have been asked to perform over the past three years.Moving is highly seasonal,so the owner/operator,who is both burly and highly educated,decides to apply the multiplicative seasonal method (based on a linear regression for total demand)to forecast the number of customers for the coming year.What is his forecast for each quarter?

Year 1 Year 2 Year 3
Quarter Demand Quarter Demand Quarter Demand
1 20 1 27 1 33
2 40 2 45 2 45
3 45 3 55 3 55
4 30 4 40 4 40