Question: 3.Problem 3 The data in the following table describe U.S. manufacturers' shipments of general aviation jet aircraft from 1979 through 1998 a.Build a simple exponential

3.Problem 3

The data in the following table describe U.S. manufacturers' shipments of general aviation jet aircraft from 1979 through 1998

a.Build a simple exponential forecast withfor all the years presented within the table.

b.Build a simple exponential forecast withfor all the years presented within the table.

c.Compute the mean absolute deviation (MAD) for both forecasts and compare.Based on the MAD, which is best and why?

Enter choice of best forecast here and state why it is best.

ESF with Absolute Deviations ESF with Absolute Deviations

Year Shipments

1979 282

1980 326

1981 389

1982 259

1983 142

1984 169

1985 145

1986 122

1987 122

1988 157

1989 157

1990 168

1991 186

1992 171

1993 198

1994 222

1995 246

1996 241

1997 348

1998 415

MAD: MAD:

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