The Big City Hospital has experienced the following occupancy rates during the past 9 months:

Month Occupancy Rate (%)

1 83

2 78

3 75

4 81

5 86

6 85

7 89

8 90

9 86

• Compute the exponential smoothing forecast with alpha=.2
• Compute the exponential smoothing forecast with alpha=.2 and beta=.3 (you can use the results of first part and just add beta calculation)
• Computer linear trend line forecast
• Compare three forecasts using MAD and indicate which appears more accurate