Question: Year 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 Production 129000 84000 49000 101000 147000 124000 81000 37000

Year

1996

1997

1998

1999

2000

2001

2002

2003

2004

2005

2006

2007

2008

2009

2010

Production

129000

84000

49000

101000

147000

124000

81000

37000

25000

119000

48000

41000

120000

44000

110000

I.Calculate three years and four years moving average centered for the given time series.

II.Plot observed data 3 years moving averages and four years moving average centered.

III.Make comments about the graph of trend values.

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