Problem:
The Oceanside hotel is adjacent to city coliseum, a 24,000-seat arena that is home to the city's professional basketball and ice hockey teams and that hosts a variety of concerts, trade shows, and conventions throughout the year. The hotel has experienced the following occupancy rates for the nice years since the coliseum opened:
Year
1 75%
2 70
3 72
4 77
5 83
6 81
7 86
8 91
9 87
Compute an exponential smoothing forecast with a=0.20, an adjusted exponential smoothing forecast with a=0.20 and b=0.20 and a linear trend line forecast. Compare the three forecasts using MAD and average error (E) and indicate which forecast seems to be most accurate.