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Accounting

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Year

1990

1991

1992

1993

1994

Forecast

11,800

13,100

14,325

17,030

?

Actual Demand

12,075

13,885

16,015

16,542

Calculate MAD for the period 1991-1993

Calculate forecast using exponential smoothing. The smoothing constant () is 0.25.

Using the information below and you answer for B above, calculate the quarterly seasonal index and 2023 monthly forecast.

Month

1990

1991

1992

1993

X

Seasonal Index

2023 Forecast

1st Quarter

2900

3110

3210

3618

2nd Quarter

3050

4175

4425

4517

3rd Quarter

3200

3250

3975

4011

4th Quarter

2925

3350

4405

4396

Total

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