The following data describe U.S. manufacturers shipments of general aviation jet aircraft from 1979 through 1998: a.

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The following data describe U.S. manufacturers€™ shipments of general aviation jet aircraft from 1979 through 1998:

Year Shipments Shipments Year 1979 282 1989 157 1980 326 1990 168 1981 389 1991 186 259 1982 1992 171 198 1983 142 1993

a. Construct a graph of the time series. Does the overall trend appear to be upward or downward?
b. Determine the three-year and five-year centered moving average curves and superimpose each on the original time series.

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Introduction To Business Statistics

ISBN: 9780324381436

6th Edition

Authors: Ronald M. Weiers

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The following data describe U.S. manufacturers shipments of general aviation jet aircraft from 1979 through 1998: a.

Question:

Year Shipments Shipments Year 1979 282 1989 157 1980 326 1990 168 1981 389 1991 186 259 1982 1992 171 198 1983 142 1993 222 1984 169 1994 1985 145 1995 246 241 1986 122 1996 1987 122 1997 348 1988 157 1998 415

Step by Step Answer:

a The overall trend is downward b The time series and the two centered m...View the full answer

Introduction To Business Statistics

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