Question 1:
I started my own company manufacturing surf boards. For the last three years I recorded the following number of surf board sales for each quarter.
Quarter
Year Winter Spring Summer Fall
2002 4 10 7 3
2003 5 12 9 4
2004 6 16 12 4
Determine a typical seasonal index for each of the four quarters.
Question 2:
The surf board business is definitely growing and in the spring of 2005 my sales totaled 15 boards for that quarter, but I have expected it because the typical seasonal index for that quarter is 1.668. The typical seasonal index for the fall quarter is .477. How many boards should I expect to sell in the fall of 2005?