Example 3: Using three-year moving averages, determine the trend. Production (1000 tonnes) Production (1000 tonnes) Year Year 1990 21 1995 22 1991 22 1996 25 1992 23 1997 26 1993 25 1998 27 1994 24 1999 26

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Q: 4 61.7 1985 61.8 1986 62.0 1987 62.7 1990 62.8 1992 62.9

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