What is the MAD?

Demand for patient surgery at Washington General Hospital has increased steadily in the past few years, as seen in the following table:

YEAR

OUTPATIENT SURGERIES PERFORMED

1

45

2

50

3

52

4

56

5

58

6

The director of medical services predicted six years ago that demand in year 1 would be 42 surgeries. Using exponential smoothing with a weight of a=0.20, develop forecasts for years 2 through 6. What is the MAD?

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