Year Month 1991 Jan 1991 Feb 1991 Mar 1991 Apr 1991 May 1991 Jun 1991 Jul 1991 Aug 1991 Sep 1991 Oct 1991 Nov 1991 Dec 1992 Jan 1992 Feb 1992 Mar

Calculate and plot (on a single time series plot) moving averages for spans of k = 5,10, and 20 for the orange prices data in excel. Calculate and compare forecasts for January 2001 orange prices for each of the models. (The actual value ofthe orange prices time series for January 2001 is 224.2.)