From the following series of cyclical fluctuations find the 3-yearly, 5-yearly, 7-yearly and 9-yearly moving averages. Also give your comments thereon. 1992 1993 1994 1995 1996 1997 1998 Year : Fluctuations: 1989 1990 1991 1 -1 -2 1 - 1 - 2

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