The University Bookstore is owned and operated by State University through an independent corporation with its own board of directors. The bookstore has three locations on or near the State University campus. It stocks a range of items, including textbooks, trade books, logo apparel, drawing and educational supplies, and computers and related products, including printers, modems, and software. The bookstore has a program to sell personal computers to incoming freshmen and other students at a substantial educational discount, partly passed on from computer manufacturers.
This means that the bookstore just covers computer costs, with a very small profit margin remaining.
Each summer all incoming freshmen and their parents come to the State campus for a 3-day orientation program.
The students come in groups of 100 throughout the summer.
During their visit the students and their parents are given details about the bookstore's computer purchase program.
Some students place their computer orders for the fall semester at this time, whereas others wait until later in the summer. The bookstore also receives orders from returning students throughout the summer. This program presents a challenging management problem for the bookstore.
The bookstore student computer purchase program has been in place for 14 years. Although the student population has remained stable during this period, computer sales have been somewhat volatile. Following are the historical sales data for computers during the first month of fall registration:

Develop an appropriate forecast model for bookstore management to use to forecast computer demand for next fall semester and indicate how accurate it appears to be.
What other forecasts might be useful to thebookstore?

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Year Computers Sold Year Computers Sold 518 651 708 921 775 810 856 792 877 693 841 1,009 902 1.103 10 12 13 14