The following equation summarizes the trend of quarterly sales of condominiums over a long cycle. Sales also exhibit seasonal variation.
Ft = 40 - 6.5t + 2t2
Ft = Unit sales
Where t = 0 the first quarter of last year
Quarter Relative
1 .95
2 .90
3 .45
4 1.70
Prepare a forecast of quarterly sales for next year and the first quarter of the year following that.
Quarter Forecast
1
2
3
4
1
